This feature allows users to more conveniently query volume details by
filtering the volume list by certain image metadata.
For example, users can query a specific bootable volume quickly
filtering by image_name or other glance metadata.
APIImpact
1. User can use glance metadata to filter volume detail in cinder api.
The query url is like this:
"volumes/detail?glance_metadata={"image_name":"xxx"}"
2. Since microversion is implemented in M, this change will add a new
version "3.4".
DocImpact
1.Operator would need to add glance_metadata to 'query_volume_filters'
option for new functionality to work.
Change-Id: I1d276d93ad5e799401b48d2234e61c28a3aaf790
Implements: blueprint support-volume-glance-metadata-query