* Moves openstack/v2 directory to compute and fixes tests accordingly
* Moves some code from api/openstack/compute to shared location, for use by volume api
* Implements basic volume functionality for types, volumes, and snapshots
* Changes service name from osapi to osapi_compute (and adds osapi_volume)
* Renames nova-api-os to nova-api-os-compute, adds nove-api-os-volume
* Separate extension mechanism for compute and volume
** Removes flag osapi_extension and replaces with osapi_compute_extension and osapi_volume_extension
* Updates the paste config
* Fixes setup.py to include nova-os-api-compute and nova-os-api-volume
* Fix bug in volume version code that occurred as result of trunk merge
* Update integrated/test_volumes.py to use new endpoint
Change-Id: I4c2e57c3cafd4e1a9e2ff3ce201c8cf28326afcd