PBC client returns different results from HTTP client 2i Requests

```ruby
jruby-1.7.2 :001 >  pbc_riak_client.bucket("myBucket").get_index("test_bin", 'blah')
 => false
jruby-1.7.2 :002 > http_riak_client.bucket("myBucket").get_index("test_bin", 'blah')
 => []
```