Add GET message integration test
- Make unit testing write fuller test objects
- Make the number of buckets/keys in dummy object configurable
- Add several helper functions like comparing binaries and objects
- Improve error reporting in testing async callbacks
    Add GET message integration test
    - Make unit testing write fuller test objects
    - Make the number of buckets/keys in dummy object configurable
    - Add several helper functions like comparing binaries and objects
    - Improve error reporting in testing async callbacks
Fix memory leaks on all integration tests so far
Updates per @metadave's comments
Merge pull request #67 from basho/feature/bch/add-get-integration-test

Add GET message integration test