BUGFIX update version discovery in overcloud
BUGFIX update version discovery in overcloud

Should match the same playbook we use in Undercloud.
Fixed bugs cause bad version discovery

Change-Id: I684cdd1a79201a8555cd716e99c131c2853f73a7

okolisny/InfraRed,redhat-openstack/infrared,redhat-openstack/infrared,okolisny/InfraRed,redhat-openstack/infrared,okolisny/InfraRed