[t] Add Group with custom GID fails with type error #2807

[phillxnet]

Add type hints to run_command() to ensure callers are passing the expected argument types, and add some type hints &/or typecasts to run_command callers in:

• user.py
• active_directory.py
• qgourp_ids list to enforce str() members only in qgroup_maxout_limit.py.
• acl.py to enforce str() members of run_command() args.
• minor refactor of parameter name in run_command() as it shadowed another context.

Fixes #2807

[phillxnet]

Testing

An rpmbuild resulted in the following single failure:

======================================================================
FAIL: test_post_requests (rockstor.storageadmin.tests.test_user.UserTests.test_post_requests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/buildbot/rockstor-buildbot/worker/Poetry-Build-on-Leap15-5/rpmbuild/rockstor-core-5.0.8-2815/src/rockstor/storageadmin/tests/test_user.py", line 195, in test_post_requests
    self.assertEqual(
AssertionError: 200 != 500 : {'id': 3, 'groupname': 'users', 'managed_user': True, 'has_pincard': False, 'pincard_allowed': 'no', 'username': 'newUser', 'uid': 3, 'gid': 5, 'public_key': None, 'shell': '/bin/bash', 'homedir': '/home/newUser', 'email': None, 'admin': True, 'user': 5, 'group': 1, 'smb_shares': []}
----------------------------------------------------------------------
Ran 279 tests in 30.602s
FAILED (failures=1)

On another test machine we have the following test results:

lbuildvm:/opt/rockstor/src/rockstor # poetry run django-admin test -v 2
...
----------------------------------------------------------------------
Ran 279 tests in 31.484s

OK

Investigating what system sensitivities we may have on the initial failing machine.

---

We have the following spin-off issue incidentally related to the test by-hand procedures used during the development of this PR's branch:
Inadvertent host sensitivity re existing user named 'testuser' in UserTests #2816

As a consequent, on the previously failing rpmbuild host, executing userdel testuser resulted in a successful rpm build.

[phillxnet]

Testing 2

Post the proposed changes, an install of an rpm built using the proposed issue/pr branch no longer fails to create legitimate new groups with custom GID:

System - Groups - Add Group (button)

Groupname: PR2815
Put this group under Rockstor management? (unticked)
GID 3333

Resulting in the expected creation of this group with custom GID:

Groupname	GID	Actions
nobody	65534
nogroup	65533
PR2815	3333

And we have the expected new group on the underlying OS:

rleap15-5:~ # cat /etc/group | grep PR2815
PR2815:x:3333: