Fix project_user_quotas_user_id_deleted_idx index

The project_user_quotas_user_id_deleted_idx index in the 203 migration
for the project_user_quotas table was using the wrong column, it should
be using user_id instead of project_id since there is already an index
for the project_id column (defined directly above it).

Fixes bug 1205693

Change-Id: I6899afe5b57432345f69b4ee91ef947a4b9ef5c9
Add passing a logging level to processutils.execute

Previously, processutils.execute always logged what commands were
run at DEBUG level.  This is usually fine, but sometimes the caller
wants to log particularly important commands at INFO level instead,
and oslo should allow that.

This is oslo-incubator aa5b65882.  No other significant changes had
been made to processutils in oslo since the last sync.

Change-Id: I09dad3759bf2f759b297ee19205cf0460b9a6baa
Allow Cinder to specify file format for NFS/GlusterFS

These drivers now have the option of passing a QCOW2 file rather
than a raw file as the volume to attach to the VM.

Required by blueprint qemu-assisted-snapshots

Change-Id: I23929538c7dad65035db5c38ff6e52348925fa27
Guest-assisted-snaps libvirt implementation

This implements volume_snapshot_create and volume_snapshot_delete
methods which create snapshots of QCOW2-based Cinder volumes.

Libvirt implementation for blueprint qemu-assisted-snapshots
Add volume snapshot APIs to driver interface

Add volume_snapshot_create and volume_snapshot_delete to the virt driver
interface.  This is needed to be able to do hypervisor assisted snapshot
operations.

Part of blueprint qemu-assisted-snapshots
Add db.block_device_mapping_get_by_id

Add a new db API method for getting a block device mapping for a given
volume ID.  This is needed when Cinder calls over to Nova asking nova to
complete a snapshot operation on its behalf.

Related to blueprint qemu-assisted-snapshots
Assisted snapshots compute API plumbing

This patch adds the plumbing necessary to get assisted volume snapshot
calls down from compute.api down to a compute host.

Part of blueprint qemu-assisted-snapshots
Add an admin API

Add an admin API endpoint to Nova.  This is intended to be an endpoint
only exposed internally to the deployment.  It will be used for
integration with other services, such as Cinder or Neutron.

By default, the admin API listens on port 8776.  When adding information
to the Keystone service catalog, this new port should be used for the
adminURL.

As of this commit, the API exposed by this endpoint is identical to that
of the regular API.  However, hooks are provided for adding admin API
endpoint specific API extensions.  This will be utilized in future
commits.

Implements blueprint admin-api

DocImpact
WIP: Add os-assisted-volume-snapshots extension
Eric's test rig, do not merge

test infra

test env stuff

testrig 1

Conflicts:
	nova/compute/manager.py

test setup

test fixup