Add tests for 1.4, round 1. Closes #53, #54, #55, #56, #59, #60.
Add verify_riak_object_reformat. Closes #62.
Add verify_api_timeouts test. Closes #63.
Add replication2_ssl test for 1.4. Closes #64.
Add replication2_upgrade and a few refactors. Closes #69

* Centralize which platforms should be skipped for which versions.
  Ubuntu 32-bit is being deprecated for Riak 1.4.
* Add replication2_upgrade, which can upgrade from some specific 1.2.x
  versions and 1.3 to 1.4.
Deprecate ubuntu-1004-32 tests for 1.4.
Add verify_asis_put test. Closes #66.
Parameterize the replication2_pg test. Addresses @metadave comments in #59.
Add rt_cascading test. Closes #68.
Add verify_dynamic_ring with all backends. Closes #70.
Merge pull request #61 from basho/sdc-1.4-tests-round-1

Add tests for 1.4