small initial commit. add user creation to prod playbook, but makes user

var empty, so no actual users are created

playbooks/edxapp_prod.yml

 - hosts: tag_Group_edxapp_prod
   vars_files:
     - "vars/secure/edxapp_prod_vars.yml"
+    - "vars/secure/users.yml"
+    - "vars/secure/edxapp_prod_users.yml"
+
   roles:
     - common
     - nginx

playbooks/vars/secure/edxapp_prod_users.yml

+---
+# these user lists cannot be merged
+# because they are not hashes
+
+env_users: []
+
+env_keys: []
+             
\ No newline at end of file