Use uuid for id in os-services API

This patch introduces a new microversion to identify services by uuid
instead of id, to ensure uniqueness across cells. GET /os-services
returns uuid in the id field, and uuid must be provided to delete a
service with DELETE /os-services/{service_uuid}.

The old PUT /os-services/* APIs are now capped and replaced
with a new PUT /os-services/{service_uuid} which takes a uuid path
parameter to uniquely identify the service to update. It also restricts
updates to nova-compute services only, since disabling or forcing-down
a non-compute service like nova-scheduler doesn't make sense as it
doesn't do anything.

The new update() method in this microversion also avoids trying to
re-use the existing private action methods like _enable and _disable
since those are predicated on looking up the service by host/binary,
are confusing to follow for code flow, and just don't really make sense
with a pure PUT resource update method.

Part of blueprint service-hyper-uuid-in-api

Co-Authored-By: Matt Riedemann <mriedem.os@gmail.com>

Change-Id: I45494a4df7ee4454edb3ef8e7c5817d8c4e9e5ad

nova/api/openstack/api_version_request.py

@@ -124,6 +124,9 @@ REST_API_VERSION_HISTORY = """REST API Version History:
              non-admins can see instance action event details except for the
              traceback field.
     * 2.52 - Adds support for applying tags when creating a server.
+    * 2.53 - Service database ids are hidden. The os-services API now returns
+             a uuid in the id field, and takes a uuid in
+             DELETE /services/{service_uuid}.
 """
 
 # The minimum and maximum versions of the API supported
@@ -132,7 +135,7 @@ REST_API_VERSION_HISTORY = """REST API Version History:
 # Note(cyeoh): This only applies for the v2.1 API once microversions
 # support is fully merged. It does not affect the V2 API.
 _MIN_API_VERSION = "2.1"
-_MAX_API_VERSION = "2.52"
+_MAX_API_VERSION = "2.53"
 DEFAULT_API_VERSION = _MIN_API_VERSION
 
 # Almost all proxy APIs which related to network, images and baremetal