This PS adds failover OpenRC environment variables to the keystone_openrc_failover_env_vars.tpl snippet and includes this snippet in the mariadb, mariadb-backup, and postgresql backup cron job templates. Change-Id: I54b9aff48d1b3d801f00680e9d8721050c6a4b29 Signed-off-by: Sergiy Markin <smarkin@mirantis.com>