Comment 2 for bug 1829791

Reviewed: https://review.opendev.org/660248
Committed: https://git.openstack.org/cgit/starlingx/config/commit/?id=8a20895fab85bfa57244545a3ebd65a939ff841e
Submitter: Zuul
Branch: master

commit 8a20895fab85bfa57244545a3ebd65a939ff841e
Author: Robert Church <email address hidden>
Date: Mon May 20 23:17:17 2019 -0400

    Check patching api prior to uploading managed app

    The patching operation check is happening too late when uploading a
    platform managed application. If the patching API is not responding, the
    managed application will be created in the database and end up stuck in
    the uploading state as the upload will not proceed.

    Move the check to the proper location to avoid prematurely creating the
    application if it can't be loaded until patch dependencies are verified.

    Also, prior to spawning the greenthread for application apply, save the
    state to 'applying'. This will prevent multiple audit cycles from
    starting greenthreads for the same action.

    Change-Id: Iada51635a6965acb404be05cfd4d9ef167aebe9f
    Closes-Bug: #1829791
    Signed-off-by: Robert Church <email address hidden>