Fix os_quota to not break when volumev2 service is not available.

os_quota checks the current quotas for compute, network and volume
services and fails when no volume service is found in the catalog.

Since openstack test deployments without volume services are common
os_quota shouldn't fail if such service is missing.

Fixes #23085

Signed-off-by: Alberto Murillo Silva <alberto.murillo.silva@intel.com>

lib/ansible/modules/cloud/openstack/os_quota.py

@@ -290,6 +290,7 @@ import sys
 
 try:
     import shade
+    from keystoneauth1 import exceptions
     HAS_SHADE = True
 except ImportError:
     HAS_SHADE = False
@@ -307,11 +308,19 @@ def _get_compute_quotas(cloud, project):
 
     return cloud.get_compute_quotas(project)
 
-def _get_quotas(cloud, project):
+def _get_quotas(module, cloud, project):
 
     quota = {}
-    quota['volume'] = _get_volume_quotas(cloud, project)
-    quota['network'] = _get_network_quotas(cloud, project)
+    try:
+        quota['volume'] = _get_volume_quotas(cloud, project)
+    except exceptions.EndpointNotFound:
+        module.warn("No public endpoint for volumev2 service was found. Ignoring volume quotas.")
+
+    try:
+        quota['network'] = _get_network_quotas(cloud, project)
+    except exceptions.EndpointNotFound:
+        module.warn("No public endpoint for network service was found. Ignoring network quotas.")
+
     quota['compute'] = _get_compute_quotas(cloud, project)
 
     for quota_type in quota.keys():
@@ -432,7 +441,7 @@ def main():
                 module.params[k] = int(v)
 
         #Get current quota values
-        project_quota_output = _get_quotas(cloud, cloud_params['name'])
+        project_quota_output = _get_quotas(module, cloud, cloud_params['name'])
         changes_required = False
 
         if module.params['state'] == "absent":
@@ -461,7 +470,7 @@ def main():
                     else:
                         module.fail_json(msg=str(e), extra_data=e.extra_data)
 
-            project_quota_output = _get_quotas(cloud, cloud_params['name'])
+            project_quota_output = _get_quotas(module, cloud, cloud_params['name'])
             changes_required = True
 
 
@@ -480,7 +489,7 @@ def main():
                     quota_call(cloud_params['name'], **quota_change_request[quota_type])
 
                 #Get quota state post changes for validation
-                project_quota_update = _get_quotas(cloud, cloud_params['name'])
+                project_quota_update = _get_quotas(module, cloud, cloud_params['name'])
 
                 if project_quota_output == project_quota_update:
                     module.fail_json(msg='Could not apply quota update')