Take ownership of /usr/lib/dracut/modules.d/91ovirtnode

We create this directory but previously didn't specify that in
the specfile. Add it so it gets removed if ovirt-node is
uninstalled.

Change-Id: Ieeca6126ba2e9a56f23a2f2dc708c7a41975022e
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=995714
Signed-off-by: Ryan Barry <rbarry@redhat.com>