This is a fix for issue #174 regarding at and cron system modules. Currently this

System modules are enables by default. But they should only be enables if
in pillars defined and supported by os_family.

Support for Redhat os_family systems is missing in at and cron #174

linux/map.jinja

              'logpath': '/var/log/atop',
              'outfile': '/var/log/atop/daily.log'
          },
+        'at': {
+             'pkgs': [],
+             'services': []
+        },
+        'cron': {
+             'pkgs': [],
+             'services': []
+        },
     },
     'Debian': {
         'pkgs': ['python-apt', 'apt-transport-https', 'libmnl0'],
              'logpath': '/var/log/atop',
              'outfile': '/var/log/atop/daily.log'
          },
+        'at': {
+             'pkgs': ['at'],
+             'services': ['atd'],
+             'user': {}
+         },
+        'cron': {
+             'pkgs': ['cron'],
+             'services': ['cron'],
+             'user': {}
+         },
     },
     'RedHat': {
         'pkgs': ['policycoreutils', 'policycoreutils-python', 'telnet', 'wget'],
              'logpath': '/var/log/atop',
              'outfile': '/var/log/atop/daily.log'
          },
+        'at': {
+             'pkgs': [],
+             'services': []
+        },
+        'cron': {
+             'pkgs': [],
+             'services': []
+        },
     },
 }, grain='os_family', merge=salt['pillar.get']('linux:system')) %}
 
-{% set at = salt['grains.filter_by']({
-    'Debian': {
-        'enabled': false,
-        'pkgs': ['at'],
-        'services': ['atd'],
-        'user': {}
-    },
-}, grain='os_family', merge=salt['pillar.get']('linux:system:at')) %}
-
-{% set cron = salt['grains.filter_by']({
-    'Debian': {
-        'enabled': false,
-        'pkgs': ['cron'],
-        'services': ['cron'],
-        'user': {}
-    },
-}, grain='os_family', merge=salt['pillar.get']('linux:system:cron')) %}
-
 {% set banner = salt['grains.filter_by']({
     'BaseDefaults': {
         'enabled': false,

linux/system/at.sls

-{%- from "linux/map.jinja" import system, at with context %}
+{%- from "linux/map.jinja" import system with context %}
 
-{%- if at.get('enabled', false) %}
+{%- if system.at.enabled is defined and system.at.enabled %}
 
 at_packages:
   pkg.installed:
-    - names: {{ at.pkgs }}
+    - names: {{ system.at.pkgs }}
 
 at_services:
   service.running:
     - enable: true
-    - names: {{ at.services }}
+    - names: {{ system.at.services }}
     - require:
       - pkg: at_packages
   {%- if grains.get('noservices') %}
   {%- endif %}
 
   {%- set allow_users = [] %}
-  {%- for user_name, user_params in at.get('user', {}).items() %}
+  {%- for user_name, user_params in system.at.get('user', {}).items() %}
     {%- set user_enabled = user_params.get('enabled', false) and
         system.get('user', {}).get(
           user_name, {'enabled': true}).get('enabled', true) %}

linux/system/cron.sls

-{%- from "linux/map.jinja" import system, cron with context %}
+{%- from "linux/map.jinja" import system with context %}
 
-{%- if cron.get('enabled', false) %}
+{%- if system.cron.enabled is defined and system.cron.enabled %}
 
 cron_packages:
   pkg.installed:
-    - names: {{ cron.pkgs }}
+    - names: {{ system.cron.pkgs }}
 
 cron_services:
   service.running:
     - enable: true
-    - names: {{ cron.services }}
+    - names: {{ system.cron.services }}
     - require:
       - pkg: cron_packages
   {%- if grains.get('noservices') %}
   {%- endif %}
 
   {%- set allow_users = [] %}
-  {%- for user_name, user_params in cron.get('user', {}).items() %}
+  {%- for user_name, user_params in system.cron.get('user', {}).items() %}
     {%- set user_enabled = user_params.get('enabled', false) and
         system.get('user', {}).get(
           user_name, {'enabled': true}).get('enabled', true) %}

linux/system/init.sls

 {%- if system.login_defs is defined %}
 - linux.system.login_defs
 {%- endif %}
+{%- if system.at is defined %}
 - linux.system.at
+{%- endif %}
+{%- if system.cron is defined %}
 - linux.system.cron
+{%- endif %}
 {%- if system.repo|length > 0 %}
 - linux.system.repo
 {%- endif %}