When there is more than one NIC attached to an instance, openstack cloud
provider returns a random InternalIP back to the host resulting in instability
with API server which only talks to a default interface.
This patch incorporates the changes made in
https://github.com/kubernetes/cloud-provider-openstack/pull/444 which enables
OpenStack Cloud Controller Manager to respect the `internal-network-name` in
cloud-config file which ensures that InternalIP remains stable.