have option to use pipenv instead of virtualenv

[marafa]

let the end user have the option to use pipenv instead of virtualenv

[nopdotcom]

I'm a big enthusiast of pipenv. Unfortunately, it can't be used to install ansible[azure], since packages have conflicting version requirements.

We could de-support Azure, or run pipenv with --skip-lock.

In fact, I bet pipenv will work for you if you run it like this:

pipenv install --skip-lock -r requirements.txt
pipenv run ./streisand

If this works for you, could you let me know?