fix(oracle-7): use `osmajorrelease` instead of `$releasever`

Avoid this error:

```
      ID: salt-master
Function: pkg.installed
  Result: False
 Comment: Error occurred installing package(s). Additional info follows:

   errors:
       - Running scope as unit run-402.scope.
         Loaded plugins: ovl, ulninfo
         https://repo.saltproject.io/py3/redhat/7Server/x86_64/3002/repodata/repomd.xml:
             [Errno 14] HTTPS Error 404 - Not Found
         Trying other mirror.
         No package salt-master available.
         Error: Nothing to do
```

.yamllint

   kitchen.vagrant.yml
   salt/osfamilymap.yaml
   salt/osmap.yaml
+  salt/osfingermap.yaml
 
 yaml-files:
   # Default settings

salt/map.jinja

 {% import_yaml "salt/defaults.yaml" as defaults %}
 {% import_yaml "salt/osfamilymap.yaml" as osfamilymap %}
 {% import_yaml "salt/osmap.yaml" as osmap %}
+{% import_yaml "salt/osfingermap.yaml" as osfingermap %}
 
 {# merge the osfamilymap #}
-{% set osfamily = salt['grains.filter_by'](osfamilymap, grain='os_family') or{} %}
-{% do salt['defaults.merge'](defaults['salt'], osfamily) %}
+{% set osfamily_map = salt['grains.filter_by'](osfamilymap, grain='os_family') or {} %}
+{% do salt['defaults.merge'](defaults['salt'], osfamily_map) %}
 
 {# merge the osmap #}
-{% set osmap = salt['grains.filter_by'](osmap, grain='os') or{} %}
-{% do salt['defaults.merge'](defaults['salt'], osmap) %}
+{% set os_map = salt['grains.filter_by'](osmap, grain='os') or {} %}
+{% do salt['defaults.merge'](defaults['salt'], os_map) %}
+
+{# merge the osfingermap #}
+{% set osfinger_map = salt['grains.filter_by'](osfingermap, grain='osfinger') or {} %}
+{% do salt['defaults.merge'](defaults['salt'], osfinger_map) %}
 
 {# merge the lookup #}
 {% set lookup = salt['pillar.get']('salt:lookup', default={}, merge=True) %}

salt/osfingermap.yaml

+# -*- coding: utf-8 -*-
+# vim: ft=yaml
+---
+
+{%- set py_ver_repr = salt['pillar.get']('salt:py_ver', '') %}
+
+{%- set osrelease = salt['grains.get']('osrelease', '') %}
+{%- set salt_release = salt['pillar.get']('salt:release', 'latest') %}
+{%- if salt_release.split('.')|length >= 3 %}
+{%-   set salt_release = 'archive/' ~ salt_release %}
+{%- endif %}
+{%- set osmajorrelease = salt['grains.get']('osmajorrelease', osrelease)|string %}
+{%- set salt_repo = salt['pillar.get']('salt:repo', 'https://repo.saltproject.io') %}
+
+Oracle Linux Server-7:
+  pkgrepo_humanname: SaltStack repo for RHEL/CentOS {{ osmajorrelease }}
+  pkgrepo: '{{ salt_repo }}/{{ py_ver_repr or 'yum' }}/redhat/{{ osmajorrelease }}/$basearch/{{ salt_release }}'
+  key_url: '{{ salt_repo }}/{{ py_ver_repr or 'yum' }}/redhat/{{ osmajorrelease }}/$basearch/{{ salt_release }}/SALTSTACK-GPG-KEY.pub'

salt/osmap.yaml

 # vim: ft=yaml
 ---
 
-{%- set py_ver_dir = salt['pillar.get']('salt:py_ver', '') %}
+{%- set py_ver_repr = salt['pillar.get']('salt:py_ver', '') %}
 
-{% set osrelease = salt['grains.get']('osrelease') %}
-{% set salt_release = salt['pillar.get']('salt:release', 'latest') %}
-{% if salt_release.split('.')|length >= 3 %}
-{% set salt_release = 'archive/' ~ salt_release %}
-{% endif %}
-{% set os_lower =  salt['grains.get']('os')|lower %}
-{% set osmajorrelease = salt['grains.get']('osmajorrelease', osrelease)|string %}
-{% set oscodename = salt['grains.get']('oscodename') %}
-{% set os_family_lower =  salt['grains.get']('os_family')|lower %}
-{% set salt_repo = salt['pillar.get']('salt:repo', 'https://repo.saltproject.io') %}
+{%- set osrelease = salt['grains.get']('osrelease', '') %}
+{%- set salt_release = salt['pillar.get']('salt:release', 'latest') %}
+{%- if salt_release.split('.')|length >= 3 %}
+{%-   set salt_release = 'archive/' ~ salt_release %}
+{%- endif %}
+{%- set os_lower =  salt['grains.get']('os')|lower %}
+{%- set osmajorrelease = salt['grains.get']('osmajorrelease', osrelease)|string %}
+{%- set oscodename = salt['grains.get']('oscodename') %}
+{%- set os_family_lower =  salt['grains.get']('os_family')|lower %}
+{%- set salt_repo = salt['pillar.get']('salt:repo', 'https://repo.saltproject.io') %}
 
 Fedora:
   pygit2: python2-pygit2
 Amazon:
   pkgrepo_name: saltstack-amzn-repo
   pkgrepo_humanname: SaltStack repo for Amazon Linux 2
-  pkgrepo: '{{ salt_repo }}/{{ py_ver_dir or 'yum' }}/amazon/2/$basearch/{{ salt_release }}'
-  key_url: '{{ salt_repo }}/{{ py_ver_dir or 'yum' }}/amazon/2/$basearch/{{ salt_release }}/SALTSTACK-GPG-KEY.pub'
+  pkgrepo: '{{ salt_repo }}/{{ py_ver_repr or 'yum' }}/amazon/2/$basearch/{{ salt_release }}'
+  key_url: '{{ salt_repo }}/{{ py_ver_repr or 'yum' }}/amazon/2/$basearch/{{ salt_release }}/SALTSTACK-GPG-KEY.pub'
 
 Ubuntu:
-  pkgrepo: 'deb {{ salt_repo }}/{{ py_ver_dir or 'apt' }}/{{ os_lower }}/{{ osrelease }}/amd64/{{ salt_release }} {{ oscodename }} main'
-  key_url: '{{ salt_repo }}/{{ py_ver_dir or 'apt' }}/{{ os_lower }}/{{ osrelease }}/amd64/{{ salt_release }}/SALTSTACK-GPG-KEY.pub'
+  pkgrepo: 'deb {{ salt_repo }}/{{ py_ver_repr or 'apt' }}/{{ os_lower }}/{{ osrelease }}/amd64/{{ salt_release }} {{ oscodename }} main'
+  key_url: '{{ salt_repo }}/{{ py_ver_repr or 'apt' }}/{{ os_lower }}/{{ osrelease }}/amd64/{{ salt_release }}/SALTSTACK-GPG-KEY.pub'
   pygit2: python-pygit2
   gitfs:
     pygit2:
         install_from_package: Null
 
 Raspbian:
-  pkgrepo: 'deb {{ salt_repo }}/{{ py_ver_dir or 'apt' }}/{{ os_family_lower }}/{{ osmajorrelease }}/armhf/{{ salt_release }} {{ oscodename }} main'
-  key_url: '{{ salt_repo }}/{{ py_ver_dir or 'apt' }}/{{ os_family_lower }}/{{ osmajorrelease }}/armhf/{{ salt_release }}/SALTSTACK-GPG-KEY.pub'
+  pkgrepo: 'deb {{ salt_repo }}/{{ py_ver_repr or 'apt' }}/{{ os_family_lower }}/{{ osmajorrelease }}/armhf/{{ salt_release }} {{ oscodename }} main'
+  key_url: '{{ salt_repo }}/{{ py_ver_repr or 'apt' }}/{{ os_family_lower }}/{{ osmajorrelease }}/armhf/{{ salt_release }}/SALTSTACK-GPG-KEY.pub'
 
 SmartOS:
   salt_master: salt
   minion_service: 'salt:minion'
   master_service: 'salt:master'
   api_service: 'salt:api'
-  python_dulwich: {{ py_ver_dir or 'py27' }}{{ '-dulwich' }}
+  python_dulwich: {{ py_ver_repr or 'py27' }}{{ '-dulwich' }}
   gitfs:
     dulwich:
       install_from_source: false

test/integration/v3000-py3/files/_mapdata/oraclelinux-7.yaml

           version: 0.23.0
         version: 0.23.0
     install_packages: true
-    key_url: https://repo.saltproject.io/py3/redhat/$releasever/$basearch/3000/SALTSTACK-GPG-KEY.pub
+    key_url: https://repo.saltproject.io/py3/redhat/7/$basearch/3000/SALTSTACK-GPG-KEY.pub
     master:
       ext_pillar:
       - cmd_yaml: cat /etc/salt/yaml
       state: running
     parallel: true
     pin_version: false
-    pkgrepo: https://repo.saltproject.io/py3/redhat/$releasever/$basearch/3000
-    pkgrepo_humanname: SaltStack repo for RHEL/CentOS $releasever
+    pkgrepo: https://repo.saltproject.io/py3/redhat/7/$basearch/3000
+    pkgrepo_humanname: SaltStack repo for RHEL/CentOS 7
     pkgrepo_name: saltstack
     py_ver: py3
     pygit2: python-pygit2

test/integration/v3001-py3/files/_mapdata/oraclelinux-7.yaml

           version: 0.23.0
         version: 0.23.0
     install_packages: true
-    key_url: https://repo.saltproject.io/py3/redhat/$releasever/$basearch/3001/SALTSTACK-GPG-KEY.pub
+    key_url: https://repo.saltproject.io/py3/redhat/7/$basearch/3001/SALTSTACK-GPG-KEY.pub
     master:
       ext_pillar:
       - cmd_yaml: cat /etc/salt/yaml
       state: running
     parallel: true
     pin_version: false
-    pkgrepo: https://repo.saltproject.io/py3/redhat/$releasever/$basearch/3001
-    pkgrepo_humanname: SaltStack repo for RHEL/CentOS $releasever
+    pkgrepo: https://repo.saltproject.io/py3/redhat/7/$basearch/3001
+    pkgrepo_humanname: SaltStack repo for RHEL/CentOS 7
     pkgrepo_name: saltstack
     py_ver: py3
     pygit2: python-pygit2

test/integration/v3002-py3/files/_mapdata/oraclelinux-7.yaml

           version: 0.23.0
         version: 0.23.0
     install_packages: true
-    key_url: https://repo.saltproject.io/py3/redhat/$releasever/$basearch/3002/SALTSTACK-GPG-KEY.pub
+    key_url: https://repo.saltproject.io/py3/redhat/7/$basearch/3002/SALTSTACK-GPG-KEY.pub
     master:
       ext_pillar:
       - cmd_yaml: cat /etc/salt/yaml
       state: running
     parallel: true
     pin_version: false
-    pkgrepo: https://repo.saltproject.io/py3/redhat/$releasever/$basearch/3002
-    pkgrepo_humanname: SaltStack repo for RHEL/CentOS $releasever
+    pkgrepo: https://repo.saltproject.io/py3/redhat/7/$basearch/3002
+    pkgrepo_humanname: SaltStack repo for RHEL/CentOS 7
     pkgrepo_name: saltstack
     py_ver: py3
     pygit2: python-pygit2

test/integration/v3003-py3/files/_mapdata/oraclelinux-7.yaml

           version: 0.23.0
         version: 0.23.0
     install_packages: true
-    key_url: https://repo.saltproject.io/py3/redhat/$releasever/$basearch/3003/SALTSTACK-GPG-KEY.pub
+    key_url: https://repo.saltproject.io/py3/redhat/7/$basearch/3003/SALTSTACK-GPG-KEY.pub
     master:
       ext_pillar:
       - cmd_yaml: cat /etc/salt/yaml
       state: running
     parallel: true
     pin_version: false
-    pkgrepo: https://repo.saltproject.io/py3/redhat/$releasever/$basearch/3003
-    pkgrepo_humanname: SaltStack repo for RHEL/CentOS $releasever
+    pkgrepo: https://repo.saltproject.io/py3/redhat/7/$basearch/3003
+    pkgrepo_humanname: SaltStack repo for RHEL/CentOS 7
     pkgrepo_name: saltstack
     py_ver: py3
     pygit2: python-pygit2