add support for installing salt-ssh and managing the roster file, updated README and pillar.example

salt/files/roster.jinja

@@ -0,0 +1,12 @@
+#
+# This file is managed by Salt! Do not edit by hand!
+#
+{%- set roster = salt['pillar.get']('salt:ssh_roster') -%}
+{%- if roster %}
+  {%- for host, options in roster.items() %}
+{{ host }}:
+    {%- for k, v in options.items() %}
+  {{ k }}: {{ v }}
+    {%- endfor %}
+  {% endfor %}
+{%- endif -%}

salt/package-map.jinja

@@ -6,7 +6,8 @@
     'Ubuntu':  {'salt-master': 'salt-master',
                 'salt-minion': 'salt-minion',
                 'salt-syndic': 'salt-syndic',
-                'salt-cloud': 'salt-cloud'},
+                'salt-cloud': 'salt-cloud',
+                'salt-ssh': 'salt-ssh'},
     'CentOS':  {'salt-master': 'salt-master',
                 'salt-minion': 'salt-minion',
                 'salt-syndic': 'salt-syndic',

salt/ssh.sls

@@ -0,0 +1,13 @@
+{% from "salt/package-map.jinja" import pkgs with context %}
+
+ensure salt-ssh is installed:
+  pkg.installed:
+    - name: {{ pkgs['salt-ssh'] }}
+
+ensure roster config:
+  file.managed:
+    - name: {{ pkgs.get('config_path', '/etc/salt') }}/roster
+    - source: salt://salt/files/roster.jinja
+    - template: jinja
+    - require:
+      - pkg: ensure salt-ssh is installed