Add 'ssh_auth_file' pillar key to generate an authorized_keys file from given ssh public keys.

pillar.example

       - PUBLICKEY
     ssh_auth.absent:
       - PUBLICKEY_TO_BE_REMOVED
+    # Generates an authorized_keys file for the user
+    # with the given keys
+    ssh_auth_file:
+      - PUBLICKEY
     google_auth:
       ssh: |
         SOMEGAUTHHASHVAL

users/init.sls

 {% endfor %}
 {% endif %}
 
+{% if 'ssh_auth_file' in user %}
+{{ home }}/.ssh/authorized_keys:
+  file.managed:
+    - user: {{ name }}
+    - group: {{ name }}
+    - mode: 600
+    - contents: |
+        {% for auth in user.ssh_auth_file -%}
+        {{ auth }}
+        {% endfor -%}
+{% endif %}
+
 {% if 'sudouser' in user and user['sudouser'] %}
 
 sudoer-{{ name }}: