Comment 2 for bug 1873798

Reviewed: https://review.opendev.org/721262
Committed: https://git.openstack.org/cgit/openstack/neutron-tempest-plugin/commit/?id=023396f59facd2caa28e992b85102ff2befcf467
Submitter: Zuul
Branch: master

commit 023396f59facd2caa28e992b85102ff2befcf467
Author: Lucas Alvares Gomes <email address hidden>
Date: Mon Apr 20 13:44:48 2020 +0100

    Fix test_multicast_between_vms_on_same_network

    The test_multicast_between_vms_on_same_network had a few errors, one
    related to the "mcast_address" being an IPAddress object and not a
    string. This has been fixed by converting the object to its string
    representation before trying to do a startswith() operation on it.

    The second problem was related to the execution of the
    unregistered_traffic_receiver.sh script. The script was created by
    the default SSH user in its home directory but, when SSH'ing the VM to
    execute it we had the become_root parameter set to True, which caused
    the command to look for the script in the /root directory. This has been
    fixed by creating and executing the script from the /tmp directory cos
    it's userless.

    Change-Id: I4046aaf0e7f4171e6ce5751b79b84c943ccf56cd
    Closes-Bug: #1873798
    Signed-off-by: Lucas Alvares Gomes <email address hidden>