Use the mysql class to get python-mysql.
Use the mysql class to get python-mysql.

Change-Id: I6d6addc2bc0e28b289726cddd6626669dbec1e17
Reviewed-on: https://review.openstack.org/17292
Reviewed-by: Jeremy Stanley <98883b97e35b7bb1ac282bb863f2e9d917db0454@yuggoth.org>
Approved: James E. Blair <e81a02a9d6405977f63a769d9f6ec8ed9d924325@inaugust.com>
Tested-by: Jenkins

dhiana/puppet-gerrit,dhiana/puppet-gerrit,open-switch/infra_puppet-gerrit,open-switch/infra_puppet-gerrit,open-switch/infra_puppet-gerrit,dhiana/puppet-gerrit