- remove python2 from the .travis.yaml file
- remove python2 from the tox.ini file
- remove `-y` flag from isort command in update-pycodestle.sh script
- fix sequence of module imports to fix faiing pycodestyle check in the following files:
- examples/multiple_clusters.py
- examples/pick_kube_config_context.py
- examples/pod_config_list.py
- testing coverage & codecov tests with python3
- testing `update-pycodestyle` for python v3.9 and arch ppc6le
Signed-off-by: Priyanka Saggu <priyankasaggu11929@gmail.com>