Run pytest with dedicated pytest.ini. (#59842)

Also disable the pytest cache plugin.

test/runner/lib/executor.py

@@ -1368,6 +1368,8 @@ def command_units(args):
             '-n', str(args.num_workers) if args.num_workers else 'auto',
             '--color',
             'yes' if args.color else 'no',
+            '-p', 'no:cacheprovider',
+            '-c', os.path.join(ANSIBLE_ROOT, 'test/runner/pytest.ini'),
             '--junit-xml',
             'test/results/junit/python%s-units.xml' % version,
         ]

test/runner/pytest.ini

@@ -0,0 +1,3 @@
+[pytest]
+xfail_strict = true
+mock_use_standalone_module = true

tox.ini

@@ -19,11 +19,6 @@ passenv =
     # variable error. See issue: #20424
     HOME
 
-[pytest]
-xfail_strict = true
-cache_dir = .pytest_cache
-mock_use_standalone_module = true
-
 [flake8]
 # These are things that the devs don't agree make the code more readable
 # E402 module level import not at top of file