Make debug module always verbose in playbooks

Created a new flag 'verbose_always' handled by
on_ok callback, similar to the 'verbose_override'
flag used by the setup module.

lib/ansible/runner/action_plugins/debug.py

@@ -46,4 +46,7 @@ class ActionModule(object):
         else:
             result = dict(msg=args['msg'])
 
+        # force flag to make debug output module always verbose
+        result['verbose_always'] = True
+
         return ReturnData(conn=conn, result=result)