Fix env var placement with custom jupyter notebooks namespace

[rimolive]

Related Issues and Dependencies

RHODS-1641

This introduces a breaking change

• [ ] Yes
• [X] No

This Pull Request implements

Improvements in the jsp-api to support custom env vars in Jupyterhub servers in a separate namespace

Description

After the introduction of the custom notebook namespaces in RHODS, the env vars form in the spawner UI stopped working. This PR fixes the way jsp-api is started with a new internal env var names NOTEBOOK_NAMESPACE to create the configmap and secrets in that custom namespace (see https://github.com/opendatahub-io/jupyterhub-singleuser-profiles/pull/174).

Testing instructions

• Build an image containing the code from this PR and the jupyterhub-singleuser-profiles PR (see the reference above)
• Deploy RHODS Jupyterhub from the built image
• Access JH spawner UI
• Create any environment variable
• Create another environment variable, but mark as Secret
• Click Start Server button
• After the Jupyter Lab UI is shown, create a simple notebook and print os.environ object
• Check if the custom env var sis listed in the code output
• Stop the server and go to the Spawner page again
• Check if the custom env vars are showing in the form

[vpavlin]

lgtm..we need to update JSP first though and ideall do the Pipfile update as part of this PR

[vpavlin]

/retest

[vpavlin]

CI is slow today, I rebuilt locally and checked the dependency is there, which was the last change. Merging