Update gophercloud to Handle New Identity Endpoints
Update gophercloud to Handle New Identity Endpoints

Currently openstack cloud provider just support keystone v2.0 and v3
The latest Identity Service is publishing an ID of v3.8, we should
update gophercloud to recognize v3.8 as a valid version id.

Kubernetes-commit: f98326b7f9364f6a5c3e336af1279833713e73c9

kubernetes/apiserver,kubernetes/apiserver