When dropping functions, we neeed to remove the function from the list
of Functions with that name AND remove the list from the Function map if
the list is empty. The second part wasn't happening.
Also fixes the test_ddl to properly create all test databases.
Change-Id: Id85af7d5db74a31161f48bea3816bdf734063133
Reviewed-on: http://gerrit.ent.cloudera.com:8080/952
Reviewed-by: Nong Li <nong@cloudera.com>
Tested-by: jenkins
6bba0c8ffe