Add ability to grant to openstack_citest mysql user
Add ability to grant to openstack_citest mysql user

Nodepool testing at least relies on the ability of the
openstack_citest user to be able to create users and grant
permissions.  Add this.

Change-Id: I6a3fb59b32676c33da3f018fe75874e4d0b2f92b

Tesora/tesora-project-config,openstack-infra/project-config,Tesora/tesora-project-config,dongwenjuan/project-config,dongwenjuan/project-config,openstack-infra/project-config