core: Renamed StorageDomainDAODbFacadeImpl.getStorageDomainIdForPoolByType

The method's parameters types are clear enough, so there's no need to
include them also in the method's name.

Change-Id: Ifea93a14062b5d0483c8492b82444c34097ff71d
Related-To: https://bugzilla.redhat.com/1085398
Signed-off-by: Idan Shaby <ishaby@redhat.com>