RHEL7 configuration is the same as CentOS7 (or the other way around).
uses mariadb like CentOS7
Closes-Bug: #1675119
Change-Id: I7ea7a6f327f69a7271b605733ba95ef296bebef7
(cherry picked from commit 0498254076)
mysql
This element sets up the basic components of MySQL.
It is light version of original MySQL element (https://github.com/openstack/tripleo-image-elements/tree/master/elements/mysql).