Filters are not applied on Consistency group snapshots GET API

[prashkre]

Current implementation of API[0] is pulling consistency group snapshots scoped to
context.[project_id/tenant_id]. To get the required project_id/tenant_id specific consistency group snapshots, request parameters are not applied for filtering the results.

When a call is made from [1] to [2] to get snapshots from cinder.cgsnapshots table, [2] is expecting search_opts which holds the filters to apply on the results but [1] is not passing them by pulling it from the request. Similarly same thing is happening on the call from [3] to [4] to get cinder.group_snapshots table.

[0] https://developer.openstack.org/api-ref/block-storage/v2/index.html?expanded=update-consistency-group-detail,list-consistency-group-snapshots-with-details-detail

[1]https://github.com/openstack/cinder/blob/master/cinder/api/contrib/cgsnapshots.py#L126
[2]https://github.com/openstack/cinder/blob/master/cinder/consistencygroup/api.py#L781

[3]https://github.com/openstack/cinder/blob/master/cinder/api/contrib/cgsnapshots.py#L128
[4]https://github.com/openstack/cinder/blob/master/cinder/group/api.py#L871