Fixed mysql dependency to match other modules

Fixed the mysql dependency to match the other puppet-openstack modules.

Change-Id: I8ad1011f892e2cadfbfa3fa4ca932fae9ded5cf0
(cherry picked from commit 49f814a58cc7594584673564ce56996e34cc09ac)

Conflicts:
	.fixtures.yml
	Modulefile

Change-Id: I8ad1011f892e2cadfbfa3fa4ca932fae9ded5cf0