Comment 9 for bug 1794364

Reviewed: https://review.openstack.org/605828
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=fc9c8772012b528176c3f58d99a58491bb1aedb4
Submitter: Zuul
Branch: stable/rocky

commit fc9c8772012b528176c3f58d99a58491bb1aedb4
Author: imacdonn <email address hidden>
Date: Wed Sep 26 04:30:49 2018 +0000

    nova-manage - fix online_data_migrations counts

    When running online_data_migrations in batches, totals were not
    being accumulated - rather the counts each batch would clobber
    those from the previous one, and the last batch would run no
    migrations, so the totals were reported as zero.

    Change-Id: Ib616f2efb69baa16e18601d27b747220bbefeb16
    Closes-Bug: #1794364
    (cherry picked from commit c4c6dc736e084f2d919b9bcf93d26df87e0341c9)