Removing validate sd from spm verbs which calls ckvg and refreshes
the domain metadata on the spm even though the spm already controls
the changes (i.e. a lot of redundant time is wasted)

Change-Id: Ibf597a9e53dad04ad7a01fc1d5ceb8a180a542f2
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=979193
Signed-off-by: Yeela Kaplan <ykaplan@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/18275
Reviewed-by: Ayal Baron <abaron@redhat.com>