Comment 4 for bug 1665072

Reviewed: https://review.openstack.org/435424
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=d635fffd2109bc98000624e08a2f3e606dca3dad
Submitter: Jenkins
Branch: stable/ocata

commit d635fffd2109bc98000624e08a2f3e606dca3dad
Author: Rodrigo Barbieri <email address hidden>
Date: Wed Feb 15 16:41:34 2017 -0200

    Fix migration_success before completing

    Share task_state was set to migration_success
    before completing migration. There was still
    updates to the share model to be performed
    before completing.

    Also, small refactoring in host-assisted
    migration's migration_complete that was not
    setting the task_state migration_completing
    at the proper time, allowing a bigger window
    for 2 concurrent migration_complete calls.

    Commit 41813736718e2b81d1d907bf49feb1940c1e990f in master
    introduced bug 1667450, so we are including partial commit
    fae08f97f17b3dc6dfaa8df7679660707c518c3a (except release-notes),
    squashing it into this fix.

    Change-Id: I88df15446ffe34f3f12770d53c3e03d232f495c2
    Closes-bug: #1665072
    (cherry picked from commit 41813736718e2b81d1d907bf49feb1940c1e990f)