Provide a way to deploy a plan

[Dougal Matthews]

This will likely look like ``openstack overcloud deploy --plan $NAME`` or ``openstack overcloud plan deploy $NAME`` or something similar. It should be *much* *much* simpler than the current deploy command and not allow users to add environments etc. at deploy time.

The current patch that uses Mistral to deploy only does so in a backwards compatible way. It updates the existing ``openstack overcloud deploy --templates`` command to use Mistral - to do this it creates a deployment plan on the fly (and overwrites whatever plan had that name already), sets parameters and deploys it.

We need to add commands that break this process down, so users create a plan, set parameters and then trigger a deploy.

We may then want to deprecate the current deploy command. I am not sure.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/360305

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/360305
Committed: https://git.openstack.org/cgit/openstack/python-tripleoclient/commit/?id=d1866edc8305a371caff1428e1d6afe2bd5e8e2a
Submitter: Jenkins
Branch: master

commit d1866edc8305a371caff1428e1d6afe2bd5e8e2a
Author: Dougal Matthews <email address hidden>
Date: Thu Aug 25 08:47:16 2016 +0100

    Add `openstack overcloud plan deploy`

    This command will start an overcloud deploy of the plan with
    Mistral and wait for it to finish.

    Closes-Bug: #1616015
    Change-Id: Ie990bfb29dd245a1c83891495aa3f4ec7a0051e8

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/newton
Review: https://review.openstack.org/373089

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/373089
Committed: https://git.openstack.org/cgit/openstack/python-tripleoclient/commit/?id=6466317de8b8d7b4bfda1104f23ba0d50f337f0f
Submitter: Jenkins
Branch: stable/newton

commit 6466317de8b8d7b4bfda1104f23ba0d50f337f0f
Author: Dougal Matthews <email address hidden>
Date: Thu Aug 25 08:47:16 2016 +0100

    Add `openstack overcloud plan deploy`

    This command will start an overcloud deploy of the plan with
    Mistral and wait for it to finish.

    Closes-Bug: #1616015
    Change-Id: Ie990bfb29dd245a1c83891495aa3f4ec7a0051e8
    (cherry picked from commit d1866edc8305a371caff1428e1d6afe2bd5e8e2a)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/python-tripleoclient 5.2.0 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/python-tripleoclient 5.5.0 release.