Raise exception when error_deleting

Tempest checks a volume delete by waiting for NotFound(404) on
show_volume(). Sometime a volume delete fails and the volume status
becomes error_deleting which means the delete is failed.
So Tempest doesn't need to wait anymore. This patch makes the check
raise an exception instead of waiting.

Closes-Bug: #1686429

Change-Id: I17a986be2eb05ef9b177d5248de02a3336f7d4bb

releasenotes/notes/raise-exception-when-error-deleting-on-volume-18d0d0c5886212dd.yaml

@@ -0,0 +1,8 @@
+---
+upgrade:
+  - |
+    Tempest checks a volume delete by waiting for NotFound(404) on
+    show_volume(). Sometime a volume delete fails and the volume status
+    becomes error_deleting which means the delete is failed.
+    So Tempest doesn't need to wait anymore. A new release of Tempest
+    raises an exception DeleteErrorException instead of waiting.

tempest/lib/services/volume/v2/volumes_client.py

@@ -187,10 +187,18 @@ class VolumesClient(rest_client.RestClient):
         return rest_client.ResponseBody(resp, body)
 
     def is_resource_deleted(self, id):
+        """Check the specified resource is deleted or not.
+
+        :param id: A checked resource id
+        :raises lib_exc.DeleteErrorException: If the specified resource is on
+        the status the delete was failed.
+        """
         try:
-            self.show_volume(id)
+            volume = self.show_volume(id)
         except lib_exc.NotFound:
             return True
+        if volume["volume"]["status"] == "error_deleting":
+            raise lib_exc.DeleteErrorException(resource_id=id)
         return False
 
     @property