Comment 10 for bug 1798472

Reviewed: https://review.openstack.org/628397
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=b5a0401472246dd3efa48631766faa72634ba36b
Submitter: Zuul
Branch: stable/queens

commit b5a0401472246dd3efa48631766faa72634ba36b
Author: Slawek Kaplonski <email address hidden>
Date: Wed Nov 14 21:31:04 2018 +0100

    Add kill_timeout to AsyncProcess

    AsyncProcess.stop() method has now additional parameter
    kill_timeout. If this is set to some value different than
    None, eventlet.green.subprocess.Popen.wait() will be called
    with this timeout, so TimeoutExpired exception will be raised
    in case if process will not be killed for this "kill_timeout"
    time.
    In such case process will be killed "again" with SIGKILL signal
    to make sure that it is gone.

    This should fix problem with failing fullstack tests, when
    ovs_agent process is sometimes not killed and test timeout was
    reached in this wait() method.

    Change-Id: I1e12255e5e142c395adf4e67be9d9da0f7a3d4fd
    Closes-Bug: #1798472
    (cherry picked from commit 9b23abbdb68f7e0c80c305ec1874281f6dea7e9e)