Improve performance listing detail for volumes

Improve performance listing detail for volumes

When large numbers of volumes are created from images in cloud,
and user uses pagination querying, there is no need to query all
volumes' volume_glance_metadata, just get those volumes which are in
response list.

Implement a new method "volume_api.get_list_volumes_image_metadata"
to query image metadata in list of volumes by using one sql querying.

Change-Id: I42307d51133bab58a166a781fccf797f0608843e
Closes-Bug: #1476150