Add keepalived element

This element will be needed for HA deployments

Change-Id: Ice66cc490abaf54109c0678296055d111ef69f4c
Enable mariadb service.

On Fedora 20, the mysqld service is called mariadb.  While there is a
symlink from mysqld->mariadb, there is an issue with that approach and
systemd. So, we need to explicitally enable mariadb if the mysqld
enablement fails.

Change-Id: Ideee870aba5275987233c8411d57024ac7def695
See: https://bugzilla.redhat.com/show_bug.cgi?id=1014311
Merge "Add keepalived element"