Fix for database names that contain colons

Bug fix: Permissions were not parsed correctly if the database name contains a colon (:) character. For example, a privilege string of "*.*:USAGE/`lnx-www-prod:wordpress`.*:ALL" would fail with "invalid privileges string: Invalid privileges specified: frozenset(['WORDPRESS`.*'])". This 1-line fix works around the problem.

lib/ansible/modules/database/mysql/mysql_user.py

@@ -478,7 +478,7 @@ def privileges_unpack(priv, mode):
     output = {}
     privs = []
     for item in priv.strip().split('/'):
-        pieces = item.strip().split(':')
+        pieces = item.strip().rsplit(':', 1)
         dbpriv = pieces[0].rsplit(".", 1)
         # Do not escape if privilege is for database or table, i.e.
         # neither quote *. nor .*