Add fixed ips to Admin>Project>Access & Security

* Add fixed IP table to floating IPs tab, and renamed tab to
  "IP Addresses"
* Add fixed_ip_{get,reserve,unreserve} to openstack.api.nova
* Create FixedIPsTable and ReserveIP/UnreserveIP table batch actions
* Add fixed IP test data
* Add tests for reserving/unreserving fixed IPs, as well as a test
  of the Access & Security page with fixed IPs populated

Change-Id: Ida4bab01ea9258104cae61df12c6b0ebddfe8204
Merge branch 'us-60-61-62' into dev