created a map.jinja and updated openssh state to use those values

openssh/init.sls

+{% from "openssh/map.jinja" import openssh with context %}
+
 openssh:
-  pkg:
-    - installed
-    {% if grains['os_family'] == 'Debian' %}
-    - name: openssh-server
-    {% endif %}
+  pkg.installed:
+    - name: {{ openssh.server }}
   service.running:
     - enable: True
-    - name: ssh
+    - name: {{ openssh.service }}
     - require:
-      - pkg: openssh
+      - pkg: {{ openssh.server }}
       - file: sshd_banner
     - watch:
       - file: sshd_config
 
 sshd_config:
   file.managed:
-    - name: /etc/ssh/sshd_config
-    - source: salt://openssh/files/sshd_config
+    - name: {{ openssh.sshd_config }}
+    - source: {{ openssh.sshd_config_src }}
 
 sshd_banner:
   file.managed:
-    - name: /etc/ssh/banner
-    - source: salt://openssh/files/banner
+    - name: {{ openssh.banner }}
+    - source: {{ openssh.banner_src }}
     - template: jinja

openssh/map.jinja

+{% set openssh = salt['grains.filter_by']({
+    'Debian': {
+        'server': 'openssh-server',
+        'service': 'ssh',
+        'sshd_config': '/etc/ssh/sshd_config',
+        'sshd_config_src': 'salt://openssh/files/sshd_config',
+        'banner': '/etc/ssh/banner',
+        'banner_src': 'salt://openssh/files/banner',
+    },
+    'RedHat': {
+        'server': 'openssh-server',
+        'service': 'sshd',
+        'sshd_config': '/etc/ssh/sshd_config',
+        'sshd_config_src': 'salt://openssh/files/sshd_config',
+        'banner': '/etc/ssh/banner',
+        'banner_src': 'salt://openssh/files/banner',
+    },
+}, merge=salt['pillar.get']('openssh:lookup')) %}