Allow kwargs in create_floating_ip

As a part of the scenario/manager.py stabilization tracked by
the below BP the patch adds kwargs argument for create_floating_ip
method so that the consumers are able to pass additional
parameters if needed.

Change-Id: Ibe6030be4386ce2723cc17950496e1661b5746c9
Implements: blueprint tempest-scenario-manager-stable
1 file changed