Automate (or facilitate) creation of staff and provider test users

[jlkravitz]

When I am testing the website, it is helpful to have – or be able to quickly create – several users with different sets of permissions.

There are several barriers to my doing so quickly at the moment:

1. licenses.csv is the only sample CSV file I have of provider data, and it does not work if the user I'm logged in as is not a member of the correct compact.
2. Creating staff and provider users requires different commands (an internal script for staff, using aws cognito-idp for providers).
3. I have to fetch the temporary password from my email and then reset the password for every user I create, instead of just having a default password that works for all of them without requiring a reset (e.g., "password").
4. I have to re-negotiate (in my own brain) sets of permissions that are worth testing every sprint.

I'm not sure of the best solution here– I could imagine anything from supporting automatic test user creation on sandbox deployment (i.e., 20 accounts are automatically created with varying permissions), or making the create user scripts more flexible, and/or not requiring password resets in sandbox environments (or all / none of the above).

Perhaps a simple step in the right direction is to create a create_test_users.py script that generates staff and providers with varying permissions and creates them in the proper AWS tables/user pools. The script could pull from a static CSV file listing key user attributes, including permissions (this will help have a consistent set of usernames for testing). Optionally, it could also generate a CSV file ala the generate_mock_data.py script.

Originally posted by @jlkravitz in #401 (comment)