Add support for replicated environments to SOA serial autoincrement feature.
389 DS sends entry change notification even if modifyTimestamp was modified because of replication from another DS. This code computes digest from resource records in zone object and compares these digests for each received entry change notification. False entry change notifications are revealed this way and no incrementation is done in that case.
Signed-off-by: Petr Spacek <firstname.lastname@example.org>