Disallow resize if image not available

If a resize is attempted on an instance that was started from an image
that has since been deleted, a resize will fail. This change makes error
reporting a bit cleaner.

This change is needed since in order to actually properly support
resize/migrate when the image is deleted - it is necessary for nova to keep
a copy of the image metadata and re-use it in case of migration/resize.

Fixes bug: 1160773
Fixes bug: 1177001

Change-Id: Ifaea71f79c97046a4cde094e3a5e676772fcceb4
Importing correlation_id middleware from oslo-incubator

Including 'correlation_id' middleware from oslo-incubator.
Adding this to openstack-common.conf to copy over the middleware to
the location nova/openstack/common/middleware

Change-Id: I21b27e8dae585345d03d59c125d9e1bbea95f830
Implements: blueprint cross-service-request-id
Merge "Disallow resize if image not available"
Merge "Importing correlation_id middleware from oslo-incubator"