Upgrade basic sanity test

[niladrih]

Changes:

• Adds a pytest for testing basic sanity in upgrade
• Add enhancement to the scripts/helm/install.sh script to support installing from a hosted registry
• Add a script to format python files

[niladrih]

Moving @tiagolobocastro's review comment here so that I can track it.

       install_command = []
       if source == ChartSource.HOSTED:
           repo_name = repo_add_mayastor()

ah ok, we want to be able to do both, got it.
Let's change the script to support this as well, rather than have separate commands here

[niladrih]

Moving @tiagolobocastro's review comment here so that I can track it.

       install_command = []
       if source == ChartSource.HOSTED:
           repo_name = repo_add_mayastor()

ah ok, we want to be able to do both, got it.
Let's change the script to support this as well, rather than have separate commands here

This change is added to this PR.

[niladrih]

bors merge

[bors-openebs-mayastor]

This PR was included in a batch that successfully built, but then failed to merge into develop. It will not be retried.

Additional information:

Response status code: 422
{"message":"All comments must be resolved.","documentation_url":"https://docs.github.com/articles/about-protected-branches","status":"422"}

[niladrih]

bors merge

[bors-openebs-mayastor]

Build succeeded:

• continuous-integration/jenkins/branch