**SUMMARY**

Test names must be unique per scope otherwise the second test overrides the first one with the same name.

**ISSUE TYPE**
- Bugfix Pull Request

**COMPONENT NAME**
ansible/test/units/parsing/test_mod_args.py
ansible/test/units/module_utils/facts/test_collectors.py
ansible/test/units/module_utils/common/validation/test_check_required_if.py
ansible/test/units/module_utils/basic/test_deprecate_warn.py

**ADDITIONAL INFORMATION**

For example if you had a test file that does:

```
def test_a():
    pass

def test_a():
    pass
```

Then only the second `test_a` will be ran. More details [here](https://codereview.doctor/features/python/best-practice/avoid-duplicate-unit-test-names).

These are the tests that are overriding previously defined tests due to this problem:

https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/parsing/test_mod_args.py#L121
https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/module_utils/facts/test_collectors.py#L397
https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/module_utils/facts/test_collectors.py#L413
https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/module_utils/common/validation/test_check_required_if.py#L56
https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/module_utils/basic/test_deprecate_warn.py#L74

I found this issue automatically, see other issues [here](https://codereview.doctor/ansible/ansible)



__test__ = True
    gather_subset = ['!all', 'env']
    valid_subsets = ['env']
    fact_namespace = 'ansible_env'
    collector_class = EnvFactCollector
    def test_collect(self):
        facts_dict = super(TestEnvFacts, self).test_collect()
        self.assertIn('HOME', facts_dict['env'])
class TestFipsFacts(BaseFactsTest):
    __test__ = True
    gather_subset = ['!all', 'fips']
    valid_subsets = ['fips']
    fact_namespace = 'ansible_fips'
    collector_class = FipsFactCollector
class TestHardwareCollector(BaseFactsTest):
    __test__ = True
    gather_subset = ['!all', 'hardware']
    valid_subsets = ['hardware']
    fact_namespace = 'ansible_hardware'
    collector_class = HardwareCollector
    collected_facts = {'ansible_architecture': 'x86_64'}
class TestNetworkCollector(BaseFactsTest):
    __test__ = True
    gather_subset = ['!all', 'network']
    valid_subsets = ['network']
    fact_namespace = 'ansible_network'
    collector_class = NetworkCollector
class TestPkgMgrFacts(BaseFactsTest):