Merge pull request #168 from konstest/master

Support "salt://path_to_keyname" ssh_key definition in users:"user name":ssh_keys:"privkey|pubkey" pillar data

pillar.example

     ssh_keys:
       privkey: PRIVATEKEY
       pubkey: PUBLICKEY
+      # or you can provide path to key on Salt fileserver
+      privkey: salt://path_to_PRIVATEKEY
+      pubkey: salt://path_to_PUBLICKEY
       # you can provide multiple keys, the keyname is taken as filename
       # make sure your public keys suffix is .pub
       foobar: PRIVATEKEY

users/init.sls

     - mode: 600
       {% endif %}
     - show_diff: False
+    {%- set key_value = salt['pillar.get']('users:'+name+':ssh_keys:'+_key) %}
+    {%- if 'salt://' in key_value[:7] %}
+    - source: {{ key_value }}
+    {%- else %}
     - contents_pillar: users:{{ name }}:ssh_keys:{{ _key }}
+    {%- endif %}
     - require:
       - user: users_{{ name }}_user
       {% for group in user.get('groups', []) %}