When glance is configured to use cinder as it's backend and we try to upload a volume to glance, the optimized path doesn't work and we fall back to the generic path.

The image creation works but it is not optimized and is a slow process.

Steps to reproduce:

1. Configure cinder to use optimized upload path
   1. In cinder.conf's driver section, add the following:
      1. image_upload_use_cinder_backend = True
2. Try uploading a volume to glance

Expected result: optimized upload volume works

Actual result: Optimized upload volume fails with the following error

2024-06-18 06:21:16.636 2778473 ERROR cinder.volume.manager glanceclient.exc.HTTPBadRequest: HTTP 400 Bad Request: Invalid location

This happens because when glance is configured using multi stores (default deployment method), it uses a new location format i.e. cinder://<store-id>/<vol-id> whereas cinder sends the old location format i.e. cinder://<vol-id>