Comment 2 for bug 1927137

Reviewed: https://review.opendev.org/c/starlingx/tools/+/789607
Committed: https://opendev.org/starlingx/tools/commit/ac05493480f6df6f31d071d29380c1b4f35b70a9
Submitter: "Zuul (22348)"
Branch: master

commit ac05493480f6df6f31d071d29380c1b4f35b70a9
Author: Scott Little <email address hidden>
Date: Tue May 4 12:42:36 2021 -0400

    fix git-review within docker build environment

    'tb create' fails to create a build environment since
    upstream git-review was updated of Apr 26.

    Fix is to install/update pbr ahead of git-review.

    Also, to reduce the likelyhood of this recurring, lock
    down specific versions of the pypi supplied tools we
    know to work.

    Closes-bug: 1927137
    Signed-off-by: Scott Little <email address hidden>
    Change-Id: Ib9fe6fd33de4d637f254ac421cc0427ee6131b65