engine: Fix Junit issue Add caching to VdsStatic, VdsDynamic, VdsGroup and VdsSpmIdMap

Add caching to VdsStatic, VdsDynamic, VdsGroup and VdsSpmIdMap introduced a failure in unit test

Change-Id: If114e0a7ef3c5260e507c28715479b486524e33e
Signed-off-by: lzelkha@redhat.com <lzelkha@redhat.com>