Comment 23 for bug 1978983

Reviewed: https://review.opendev.org/c/openstack/nova/+/854979
Committed: https://opendev.org/openstack/nova/commit/b6c877377f58ccaa797af3384b199002726745ea
Submitter: "Zuul (22348)"
Branch: stable/victoria

commit b6c877377f58ccaa797af3384b199002726745ea
Author: Amit Uniyal <email address hidden>
Date: Wed Jul 6 18:20:02 2022 +0000

    add regression test case for bug 1978983

    This change add a repoducer test for evacuating
    a vm in the powering-off state

    While backporting to stable/victoria
    Fixed conflict in functional.integrated_helpers
    1 - Added placeholder NOT_SPECIFIED as object
            Its a default parameter value for _evacuate_server
    2 - Updated _evacuate_server defition
            to allow function to wait, until expected
            server state reached
    3 - Added _start_server and _stop_server
    4 - Updated _evacuate_server arguments for test_evacuate
    as per updated _evacuate_server signature

    Related-Bug: #1978983
    Change-Id: I5540df6c7497956219c06cff6f15b51c2c8bc299
    (cherry picked from commit 5904c7f993ac737d68456fc05adf0aaa7a6f3018)
    (cherry picked from commit 6bd0bf00fca6ac6460d70c855eded3898cfe2401)
    (cherry picked from commit 1e0af92e17f878ce64bd16e428cb3c10904b0877)
    (cherry picked from commit b57b0eef218fd7604658842c9277aad782d11b45)