Fix typo in filename - ibm_powerkvm-release

Change-Id: Iec6c3fde0f9216982b85185ab9d12380528187b1
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1131965
Signed-off-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/33452