packaging: modify ovirt-live to 3.2 stable

*modifies the ovirt-live to base on ovirt 3.2 stable version.
*change admin password to "ovirt"
*minor tweaks

Change-Id: Id8807f5a25ad1690a1407db8aab25541ca1de080
Signed-off-by: Ohad Basan <obasan@redhat.com>