Revert "ISPN-2918 TopologyAwareConsistentHashFactory doesn't distribute data to nodes evenly"

This reverts commit 65cbbf1811b6165923af04a6eed1d2ddcb996cc4.
ISPN-2402 Don't throw SuspectExceptions

We can't ignore a leaver during prepare if it's the primary owner of a key,
because then we don't have a guarantee that it acquired a lock. So it would
be possible for multiple prepare commands to report success for the same
key.