Adding test for simultaneous replication and riak object reformatting. Currently failing
Verify object format differences between cluster.

Verify that replication from a v1 object format cluster to a v0 object
format cluster succeeds.
Clean up code, refactor into functions.
Add v1 -> v0 test.
Use the keylist strategy.
Additional debugging; use AAE strategy.
Add passing AAE-based object format v0 -> v1 replication test.
Add v1 -> v0 replication test.
General code cleanup.
Merge pull request #511 from basho/features/csm/repl-object-format

Verify object formats via replication.