Problem: storage service user roles can't be set from manage.py

[scollazo]

When creating/updating storage service users from the command line, using manage.py create_user, there is no command line switch to set/update the user role

Expected behaviour

Roles can be set when creating users from the command line

Current behaviour

The output of the cli command is:

usage: manage.py create_user [-h] --username USERNAME --email EMAIL --password PASSWORD --api-key
                             API_KEY [--superuser] [--version] [-v {0,1,2,3}] [--settings SETTINGS]
                             [--pythonpath PYTHONPATH] [--traceback] [--no-color] [--force-color]
                             [--skip-checks]

But when using the web UI to create a user, this option is available:

Steps to reproduce
Create an storage user using manage.py

Your environment (version of Archivematica, operating system, other relevant details)

Archivematica storage service 0.21.0 on rockylinux 9

---

For Artefactual use:

Before you close this issue, you must check off the following:

• All pull requests related to this issue are properly linked
• All pull requests related to this issue have been merged
• A testing plan for this issue has been implemented and passed (testing plan information should be included in the issue body or comments)
• Documentation regarding this issue has been written and merged (if applicable)
• Details about this issue have been added to the release notes (if applicable)