The 'signature_verified' parameter should not be added to image when upload volume to image.
1. Created a volume from a image by downloading, called vol-1.
2. Upload volume vol-1 to a new image image-1.
3. Creating a new volume from image image-1 also by downloading, called vol-2, would be failed, caused by reason:
```bash
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager Traceback (most recent call last):
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/volume/flows/manager/create_volume.py", line 448, in _handle_bootable_volume_glance_meta
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager self._capture_volume_image_metadata(context, volume.id,
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/volume/flows/manager/create_volume.py", line 698, in _capture_volume_image_metadata
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager self.db.volume_glance_metadata_bulk_create(context, volume_id,
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/db/api.py", line 997, in volume_glance_metadata_bulk_create
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager return IMPL.volume_glance_metadata_bulk_create(context, volume_id,
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/db/sqlalchemy/api.py", line 185, in wrapper
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager return f(*args, **kwargs)
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/db/sqlalchemy/api.py", line 200, in wrapper
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager return f(context, volume_id, *args, **kwargs)
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/db/sqlalchemy/api.py", line 5181, in volume_glance_metadata_bulk_create
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager raise exception.GlanceMetadataExists(key=key,
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager cinder.exception.GlanceMetadataExists: Glance metadata cannot be updated, key signature_verified exists for volume id 91db0da8-d7ad-46e1-8302-6c0c4700b349
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager During handling of the above exception, another exception occurred:
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager Traceback (most recent call last):
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/taskflow/engines/action_engine/executor.py", line 53, in _execute_task
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager result = task.execute(**arguments)
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/volume/flows/manager/create_volume.py", line 1220, in execute
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager model_update = self._create_from_image(context,
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/utils.py", line 686, in _wrapper
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager return r.call(f, *args, **kwargs)
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/tenacity/__init__.py", line 409, in call
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager do = self.iter(retry_state=retry_state)
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/tenacity/__init__.py", line 356, in iter
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager return fut.result()
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/usr/lib/python3.8/concurrent/futures/_base.py", line 437, in result
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager return self.__get_result()
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/usr/lib/python3.8/concurrent/futures/_base.py", line 389, in __get_result
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager raise self._exception
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/tenacity/__init__.py", line 412, in call
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager result = fn(*args, **kwargs)
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/volume/flows/manager/create_volume.py", line 1126, in _create_from_image
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager self._handle_bootable_volume_glance_meta(context, volume,
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager File "/var/lib/openstack/lib/python3.8/site-packages/cinder/volume/flows/manager/create_volume.py", line 459, in _handle_bootable_volume_glance_meta
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager raise exception.MetadataCopyFailure(reason=ex)
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager cinder.exception.MetadataCopyFailure: Failed to copy metadata to volume: Glance metadata cannot be updated, key signature_verified exists for volume id 91db0da8-d7ad-46e1-8302-6c0c4700b349
2023-10-17 06:35:43.462 1144026 ERROR cinder.volume.manager
2023-10-17 06:35:43.470 1144026 WARNING cinder.volume.manager [None req-20a9b763-939a-4d78-a09a-6ff8875eea56 a6b01085a5e94be4990385144dde7fde 3942fe87df1e4cf29b28a5755241aae8 - - -] Task 'cinder.volume.flows.manager.create_volume.CreateVolumeFromSpecTask;volume:create'
```
The 'signature_verified' parameter is useless in glance, which is not necessary remain when upload to image.
Fix proposed to branch: master
Review: https:/