Add testing for http API status code responses in different quorum conditions

[jjrodrig]

Overview

Add testing for http API status code responses in different quorum conditions

Testing recommendations

make test-cluster-with-quorum
make test-cluster-without-quorum

Related Issues or Pull Requests

Covers the testing described in #1156

Checklist

• Code is written and works correctly;
• Changes are covered by tests;
• Documentation reflects the changes;

[wohali]

@janl do we really want to add a bunch of new couchjs-based tests at this point? I am -0.5.

[janl]

@wohali this is stuff we are not testing at the moment and the Elixir tests are still being filled out, so why not? :)

[wohali]

as I said I won't block, I'm glad for more tests, I'd just prefer them to be in Elixir :)

[janl]

Thank you!