Make services_client use **kwargs

As we discussed on
http://lists.openstack.org/pipermail/openstack-dev/2015-July/068864.html
All http POST/PUT methods need to contain **kwargs as their arguments.
This patch makes services_client use **kwargs.

Partially implements blueprint consistent-service-method-names

Change-Id: Ib5617c3957cf60b2c1f11b78b7c3a136adf7ef9d
1 file changed