Antifactory(python packages): Add package from separate channel

[culkeri]

https://jirab.statcan.ca/browse/DASGEO-635

Please add: arcgis python package to the artifactory.

Package is available through a separate conda channel titled: esri

The normal install command is; conda install -c esri arcgis but as we have disabled 'open-internet' users receive an https error.

This is a user requirement, we have not discussed alternative options, but are open to advice if adding it to antifactory is not an option (such as adjusting our url whitelist, John is on vacation so I have not coordinated with him yet, one possibility could be doing an offline install to the DTL vm image so its pre-installed for users).

More information on the package/channel can be found here: https://developers.arcgis.com/python/guide/understanding-conda/#:~:text=Esri%20has%20created%20a%20conda,packages%20into%20specific%20conda%20environments. Esri has created a conda repository at a channel named esri to store the arcgis package. You can access channels with a flag in the conda install command, and instruct conda to install packages into specific conda environments.