Dev: crmd: For now revert a previous commit that stopped considering num_updates when deciding who had the "best" CIB
Doing so caused various problems as num_updates is still used by the CIB when accepting diff updates.
So this change caused the CIBs to become wildly out of sync - however this as also when the epoch was not being maintained correctly

Mercurial revision: 7fb31f4831e4f8e90944384b724e30bd34982e3d