Install plotnine on ATMO clusters

[dzeber]

Please install the plotnine package (tools for graphing data) so that we can have it available as one of our default analysis tools.

[jezdez]

This is the codebase that runs the ATMO website, please reopen the ticket in the https://github.com/mozilla/emr-bootstrap-spark repo instead. Thanks!

[jezdez]

Oh, I only see now that issues are disabled in that repo. Reopening..

@jklukas @mreid-moz Do you happen to know why that's not the case?

[jklukas]

I don't know why issues are disabled there; I'm guessing it's to encourage folks to file bugzilla bugs rather than issues due to worry of nobody seeing the issues.