GET snapshots without details does not return user_id as mentioned in api-ref

[Ghanshyam Mann]

api-ref says user_id is returned in GET (no detail) snapshots API

- https://docs.openstack.org/api-ref/block-storage/v3/?expanded=list-accessible-snapshots-detail#list-accessible-snapshots

But it does not return actually. This is found while adding schema in Tempest side
- https://review.opendev.org/#/c/609624/6/tempest/lib/api_schema/response/volume/snapshots.py@46

While checking the history of 3.45 microversion when user_id was added in snapshot API response, it seems it is never added in code but only updated in api-ref

- https://review.opendev.org/#/c/472545/

As we cannot fix the old microversion let's fix the api-ref for now.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/728301

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/728301
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=6b866de648ec595b6e195c2d38c3669bf25849f8
Submitter: Zuul
Branch: master

commit 6b866de648ec595b6e195c2d38c3669bf25849f8
Author: Ghanshyam Mann <email address hidden>
Date: Thu May 14 16:44:08 2020 -0500

    Fix api-ref for GET snapshot response

    GET snapshot without detail does not return user_id
    atributes but api-ref say it does. Fixing the api-ref.

    Change-Id: I006df750a9f01098c8c326648f5da472d1a10f06
    Closes-Bug: #1878699