Update Python version of jupyterhub to Python 3.8

[tmckayus]

Related Issues and Dependencies

…

This introduces a breaking change

• [ ] Yes
• [x] No

This Pull Request implements

This PR changes the Python version to 3.8 in an image built from this repository

Description

Change the Python in the Pipfile and regenerate Pipfile.lock Update a path in the .s2i/bin/assemble to reference Python 3.8 instead of 3.6 Change the import of distutils.util to work with Python 3.8

[tmckayus]

@vpavlin ptal

Note, this needs a jupyterhub-quickstart base image that use Python 3.8 as well so we'll have a corresponding PR.

[tmckayus]

Dependent on https://github.com/opendatahub-io/jupyterhub-quickstart/pull/23

[tmckayus]

Test images at: quay.io/tmckayus/jupyterhub-odh:3.8 # built in openshift with the attached buildconfig jupyterhub-38-json.txt

quay.io/tmckayus/jupyterhub-quickstart:3.8 # built with updated dockerfile from https://github.com/opendatahub-io/jupyterhub-quickstart/pull/23

[vpavlin]

/deploy

[vpavlin]

/deploy

[tmckayus]

/deploy