tools: move python code out of jenkins shell

https://ci.nodejs.org/job/node-test-commit-v8-linux/configure echoes
python code into tools and runs it. Move these scripts into tools for
better maintainability.

Once this lands and is back-ported into LTS branches a bunch of shell
code can be deleted from the job.

PR-URL: https://github.com/nodejs/node/pull/28458


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>