* Integration test for floatingip cluster
* Implements mocking of floatingIP (only list for now)
* Expands various cloudmocks
* Fixes an NPR in openstack validation
* Fixes a bug where kops tries to use DNS even if the cluster is gossip
This is the bulk of the changes necessary to support openstack integration tests.
As mentioned in cloudmock/openstack/README.md, this involved a lot of wireshark to understand
how the gophercloud clients builds the requests and expects the responses.