Merge pull request #190 from arthurlogilab/nginx-users-makedirs

[nginx/users] convert file.present into file.managed with no content

nginx/users.sls

@@ -10,7 +10,7 @@ touch {{ htauth }}:
     - creates: {{ htauth }}
 
 make sure {{ htauth }} exists:
-  file.exists:
+  file.managed:
     - name: {{ htauth }}
     - makedirs: True