A new version of pylint was released recently on pypi.org, causing many
tox/zuul errors in various repos. Solution: restrict pylint<3.0.0 here,
as this file is referenced by tox.ini in most other StarlingX repos.
Signed-off-by: Davlet Panech <davlet.panech@windriver.com>
Change-Id: I83a9e1f952435d6397eb997bf99b968ec27e9426