[rbac] enable service request results with validation error 'disabled_reason' is a required property when using admin role

[Yosi Ben Shimon]

When using admin role, the response for "enable service" request doesn't contain the "disabled_reason" property as the tempest validation expects.
* it happens to admin only since this operation is forbidden for readers & members.

tempest.log:

2024-06-16 11:53:44,270 884733 INFO [tempest.lib.common.rest_client] Request (ProjectAdminTests:test_enable_service): 200 PUT http://10.0.0.135:8776/v3/2de8fad2ade64a978b3817e3e0c9b00a/os-services/enable 0.032s
    2024-06-16 11:53:44,271 884733 DEBUG [tempest.lib.common.rest_client] Request - Headers: {'Content-Type': 'application/json', 'Accept': 'application/json', 'Openstack-Api-Version': 'volume 3.3', 'X-Auth-Token': '<omitted>'}
            Body: {"binary": "cinder-backup", "host": "controller-1"}
        Response - Headers: {'date': 'Sun, 16 Jun 2024 11:53:44 GMT', 'server': 'Apache', 'content-length': '106', 'x-compute-request-id': 'req-316f5214-d9f9-4af3-baa4-eaaf9c0ce201', 'openstack-api-version': 'volume 3.3', 'vary': 'OpenStack-API-Version', 'x-openstack-request-id': 'req-316f5214-d9f9-4af3-baa4-eaaf9c0ce201', 'content-type': 'application/json', 'connection': 'close', 'status': '200', 'content-location': 'http://10.0.0.135:8776/v3/2de8fad2ade64a978b3817e3e0c9b00a/os-services/enable'}
            Body: b'{"disabled": false, "host": "controller-1", "service": "", "binary": "cinder-backup", "status": "enabled"}'

    Traceback (most recent call last):
      File "/home/stack/tempest-auto/tempest/tempest/lib/common/rest_client.py", line 1101, in validate_response
        jsonschema.validate(body, body_schema,
      File "/usr/lib/python3.9/site-packages/jsonschema/validators.py", line 934, in validate
        raise error
    jsonschema.exceptions.ValidationError: 'disabled_reason' is a required property

    Failed validating 'required' in schema:
        {'additionalProperties': False,
         'properties': {'binary': {'type': 'string'},
                        'disabled': {'type': 'boolean'},
                        'disabled_reason': {'type': ['string', 'null']},
                        'host': {'type': 'string'},
                        'service': {'type': 'string'},
                        'status': {'enum': ['enabled', 'disabled']}},
         'required': ['disabled',
                      'status',
                      'host',
                      'service',
                      'binary',
                      'disabled_reason'],
         'type': 'object'}

    On instance:
        {'binary': 'cinder-backup',
         'disabled': False,
         'host': 'controller-1',
         'service': '',
         'status': 'enabled'}

rhosp-release: Red Hat OpenStack Platform release 17.1.3 (Wallaby)
Cinder version: 7.4.1

[Takashi Kajinami (kajinamit)]

If this is a bug in downstream product then report the bug to the vendor.
This is not a bug tracker for any downstream product but upstream development. It should contain upstream release version/name instead of any downstream product name or version.