Missing impl of microversions 41, 42 and 43

[John Griffith]

While submitting the attachment-complete changes the MAX version in the client was at 40. I bumped that up to 44 thinking that the other changes must be "in flight" and just not merged yet. Turns out that isn't the case; and these were just skipped.

This patch implements the changes for 41 and 43; 42 is a noop for the client as it's a server side only change.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/501897

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/501902

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/501902
Committed: https://git.openstack.org/cgit/openstack/python-cinderclient/commit/?id=2255fc99da9752737dcaa96ae4507b646074afb2
Submitter: Jenkins
Branch: master

commit 2255fc99da9752737dcaa96ae4507b646074afb2
Author: j-griffith <email address hidden>
Date: Thu Sep 7 23:51:37 2017 +0000

    Implement metadata for backup create/update

    We have a gap in the micro versions implemented in the cinderclient
    and the MAX version being reported by the client.

    This patch addresses the missing changes for micro version 3.43
    which adds support for metadata for backup create and update.

    Change-Id: I14c7205784c53ec3ab0985a4460a88f59de171fb
    Partial-Bug: #1715759

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/501897
Committed: https://git.openstack.org/cgit/openstack/python-cinderclient/commit/?id=3d1225cbb0435c9912ff1359f2db07ae4e6c81eb
Submitter: Jenkins
Branch: master

commit 3d1225cbb0435c9912ff1359f2db07ae4e6c81eb
Author: j-griffith <email address hidden>
Date: Thu Sep 7 23:29:55 2017 +0000

    Implement UserID in snapshot list response

    We have a gap in the microversions implemented in the cinderclient
    and the MAX version being reported by the client.

    One of those is the addition of "user_id" in the snapshot list
    response. This patch adds that with the appropriate version
    checking. Note that the Max version has already been updated,
    but there are a few implementations missing.

    Change-Id: Ia8bdb46b46091a89996e404825466430b8906d18
    Partial-Bug: #1715759

[Sean McGinnis (sean-mcginnis)]

I believe we got all of these now. If not, please reopen.