Removed MariaDB special case
Removed MariaDB special case

Special case for package mysql-server is obsolete from Icehouse release.

This patch is related to rhbz#1150104, but it's not a fix for the bug.

Change-Id: I84491aa9bb5b6cc099bdcbbee431126c3e3fbeb8

openstack/packstack,xbezdick/packstack,stackforge/packstack,stackforge/packstack,fr34k8/packstack,xbezdick/packstack,xbezdick/packstack,openstack/packstack,palmer159/openstack-test,imcsk8/packstack,palmer159/openstack-test,mahak/packstack,fr34k8/packstack,mahak/packstack,imcsk8/packstack,palmer159/openstack-test,openstack/packstack,fr34k8/packstack,mahak/packstack,stackforge/packstack,imcsk8/packstack