Make 3 functions in network_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 create_bulk_port, create_bulk_subnet,
create_bulk_network of network_client use **kwargs.

Partially implements blueprint consistent-service-method-names

Change-Id: I992769608dedeb4afa752130240ad60e709a99fe
3 files changed