Comment 21 for bug 1720846

Reviewed: https://review.openstack.org/509900
Committed: https://git.openstack.org/cgit/openstack/charm-nova-cloud-controller/commit/?id=3b873932be005eb6ec2b979fe72a92ece4fe905b
Submitter: Zuul
Branch: master

commit 3b873932be005eb6ec2b979fe72a92ece4fe905b
Author: Corey Bryant <email address hidden>
Date: Fri Oct 6 17:37:04 2017 +0000

    Add nova-manage failure verbosity and clean up Cells V2 code

    Update all nova-manage commands to use subprocess.check_output()
    and log subprocess.CalledProcessError.output on failure. This
    will help capture nova-manage error details on first failure.

    Specify cell1 uuid on discover_hosts call. This doesn't change
    behavior, it is just more explicit and useful if we move to
    multiple cells in the future.

    Introduce an is_cellv2_init_ready() function that uses contexts to
    check if cells_v2 is ready to initialize. This cleans up the
    corresponding TODOs.

    Move checks for cell v2 init readiness to update_cell_db_if_ready(),
    also cleaning up corresponding TODOs.

    Change-Id: I313edce84d3d249031e020a4fbb4baf216c01ddb
    Related-Bug: 1720846