add netapp copyoffload provider location

By volume creation the volume database entry is created with the field provider_location = null.
When cinder tries to register an image-cache from the new volume it gets the volume information
from the database and can not derive the mountpoint for "None".
This fix will set the provider location to prevent the error mentioned in the issue.

Closes-Bug: 1965952
Change-Id: I0fe11542d2d5440d1048d388e7a7b09055cf3af8

cinder/volume/drivers/netapp/dataontap/nfs_cmode.py

@@ -639,6 +639,8 @@ class NetAppCmodeNfsDriver(nfs_base.NetAppNfsDriver,
                 copied = True
             elif (cache_copy and
                   self.configuration.netapp_copyoffload_tool_path):
+                volume['provider_location'] = volume_utils.extract_host(
+                    volume['host'], level='pool')
                 LOG.debug("Trying copy from cache using copy offload.")
                 self._copy_from_remote_cache(volume, image_id, cache_copy)
                 copied = True

releasenotes/notes/bug-b3c37df596c7a632.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    `Bug #1953168 <https://bugs.launchpad.net/cinder/+bug/1965952>`_:
+     add netapp copyoffload provider location