Fixed return value disable{d,s}_reason in compute_service_info module

OpenStack SDK 0.53 renamed parameter disables_reason to disabled_reason
in openstack/compute/v2/service.py, hence our compute_service_info
module will return different values depending on which release of
the OpenStack SDK is used.

Ref.: 5450c45253

Change-Id: I1c0f787f7f67c92f92dd106fc8d55580461e4aa3

ci/roles/nova_services/tasks/main.yml

@@ -6,7 +6,16 @@
   register: result
   failed_when: "result.openstack_compute_services | length <= 0"
 
-- name: Assert fields
+- name: Assert fields on OpenStack SDK before 0.53
+  when: sdk_version is version(0.53, '<')
+  assert:
+    that:
+    - '["availability_zone", "binary", "disables_reason", "is_forced_down",
+        "host", "name", "state", "status", "updated_at", "id"] |
+        difference(result.openstack_compute_services.0.keys()) | length == 0'
+
+- name: Assert fields on OpenStack SDK 0.53 and later
+  when: sdk_version is version(0.53, '>=')
   assert:
     that:
     - '["availability_zone", "binary", "disabled_reason", "is_forced_down",

plugins/modules/compute_service_info.py

@@ -61,7 +61,11 @@ openstack_compute_services:
             type: str
         disabled_reason:
             description: The reason why the service is disabled
-            returned: success
+            returned: success and OpenStack SDK >= 0.53
+            type: str
+        disables_reason:
+            description: The reason why the service is disabled
+            returned: success and OpenStack SDK < 0.53
             type: str
         availability_zone:
             description: The availability zone name.