Comment 8 for bug 1948935

Reviewed: https://review.opendev.org/c/openstack/tempest/+/822434
Committed: https://opendev.org/openstack/tempest/commit/bd722d366e1787f101dd26e8770e24f22970a4f7
Submitter: "Zuul (22348)"
Branch: master

commit bd722d366e1787f101dd26e8770e24f22970a4f7
Author: lpiwowar <email address hidden>
Date: Tue Dec 21 09:42:28 2021 +0100

    Set default value of --concurrency to 2

    There is a non-negligible number of tests in tempest that need accounts
    generated by account-generator with a concurrency of at least 2. Running
    these tests with accounts generated with the current default value for
    concurrency makes them therefore fail.

    This change sets the default value for concurrency to 2 and updates
    the documentation for --concurrency parameter.

    Closes-Bug: #1948935
    Change-Id: Iada980beff9db3c8cd02c84d0d7602264b66ddf8