stacks_prvs:
  mysql_grants.present:
    - host: 127.0.0.1
    - database : stacks
    - grant: CREATE,DROP,DELETE,INSERT,SELECT,UPDATE,EXECUTE,ALL
    - user: stacks



causes this error :

 ID: stacks_prvs
    Function: mysql_grants.present
      Result: False
     Comment: An exception occurred in this state: Traceback (most recent call last):
                File "/usr/lib/python2.7/dist-packages/salt/state.py", line 1316, in call
                  *cdata['args'], **cdata['kwargs'])
                File "/usr/lib/python2.7/dist-packages/salt/states/mysql_grants.py", line 122, in present
                  grant, database, user, host, grant_option, escape, **connection_args
                File "/usr/lib/python2.7/dist-packages/salt/modules/mysql.py", line 1165, in grant_exists
                  for grant in grants:
              TypeError: 'bool' object is not iterable
     Started:
    Duration:
     Changes: