Add API test for resizing a stopped server

The compute API allows resizing a stopped server but we don't test it
and we've regressed that flow in the past, so add a test to guard
against it.

Change-Id: I6ca84da9deb9b9a97fad0e68b5f0845a617ae314
Add missing compute service tags to volume API tests

This commit adds the missing service tags to the volume api tests.

Partially implements bp add-service-tags

Change-Id: I6f403aab25ed5432bb91a7c8ee1801293ce91c9a
Merge "Add API test for resizing a stopped server"
Merge "Add missing compute service tags to volume API tests"