Add test for timeout of 2i queriess
Add HTTP timeout tests
Fix `verify_2i_timeout`

* My machine is too fast, changed timeout to 1ms.

* Fixed match of return from `http_query`.

* The proplists key is binary, not an atom (i.e. <<"keys">>).
Merge pull request #341 from basho/gh610-2i-timeout

Add test for timeout of 2i queriess