Pushing changes for host_vars and demo playbooks
host_vars, common/tasks, mariadb-galera-server/tasks and
playbooks/copy-hosts, playbooks/demo-openstack

bugfixes:
included Updated galera resource agent for RHEL7 rpm resource-agents-3.9.5-37.el7.x86_64.rpm
Created stonith devices for controller and network nodes for Virtual
Machines
Bugfixes for VM stonith devices, updated galera module, mysql log file
ownership

created demo hosts file that is copied to all demo hosts
Added repos for all RHEL7 internal cdn