Bug Fix - Adding an allowed address pair wipes port security groups
Bug Fix - Adding an allowed address pair wipes port security groups

Fix for cloud routes enabled instances will have their security groups
removed when the allowed address pair is added to the instance's port.

Upstream bug report is in:
https://github.com/gophercloud/gophercloud/issues/509

Upstream bug fix is in:
https://github.com/gophercloud/gophercloud/pull/510

Kubernetes-commit: 74a3d89ad4ff1508a16bacb0c333a1f795c31470

caesarxuchao/client-go,kubernetes/client-go,caesarxuchao/client-go,li-ang/client-go