fix meta dependencies

meta/main.yml

@@ -191,7 +191,7 @@ galaxy_info:
     # NOTE: A tag is limited to a single word comprised of
     # alphanumeric characters. Maximum 20 tags per role.
 
-dependencies:
+dependencies: []
   #- { role: supervisord }
   # List your role dependencies here, one per line.
   # Be sure to remove the '[]' above if you add dependencies