ISPN-2475 When L1.onRehash is enabled, L1 invalidations should be sent
to the previous owners

* Changed L1 on rehash to properly add requestors for previous owners
* Reenabled tests for L1 on rehash to confirm working
* Removed unneeded looping in InvalidateL1Command as track modified keys
ISPN-3300 PutForExternalRead doesn't supress exceptions with TotalOrder

* the test is throwing an exception for the put() operation but the transaction
manager is supressing it when synchronization is used.

* Besides that, PFER is working ok.