* provider/openstack: LoadBalancer Security Groups
This commit adds the ability to specify security groups on a loadbalancer
resource.
* provider/openstack: LoadBalancer Security Groups Refactor
Moving common security group code into a dedicated function.
This commit cleans up the acceptance test formatting for the lbaas v2
resources. It also modifies the devstack script to enable the lbaas
v2 service for testing. Finally, this commit increases the timeout
for load balancer creation since it takes some time to do within
devstack.
