PYCBC-809 PEP8/MyPy warning removal
PYCBC-809 PEP8/MyPy warning removal

Fixes the removal of **kwargs that broke the tests.

Change-Id: I7dbef2bb4eea53ecbb227489df295d1c3c86ae9a
Reviewed-on: http://review.couchbase.org/122815
Reviewed-by: David Kelly <d83cd2a93a916ce0b0d4c1349b44be044799feca@gmail.com>
Tested-by: David Kelly <d83cd2a93a916ce0b0d4c1349b44be044799feca@gmail.com>

couchbase/couchbase-python-client,couchbase/couchbase-python-client