Fix unit tests which modify the source tree. (#45763)

* Fix CNOS unit test log usage.
* Use temp dir for Galaxy unit tests.
* Write to temp files in interfaces_file unit test.
* Fix log placement in netapp_e_ldap unit test.

test/units/cli/test_galaxy.py

@@ -39,6 +39,9 @@ class TestGalaxy(unittest.TestCase):
         '''creating prerequisites for installing a role; setUpClass occurs ONCE whereas setUp occurs with every method tested.'''
         # class data for easy viewing: role_dir, role_tar, role_name, role_req, role_path
 
+        cls.temp_dir = tempfile.mkdtemp(prefix='ansible-test_galaxy-')
+        os.chdir(cls.temp_dir)
+
         if os.path.exists("./delete_me"):
             shutil.rmtree("./delete_me")
 
@@ -89,6 +92,9 @@ class TestGalaxy(unittest.TestCase):
         if os.path.isdir(cls.role_path):
             shutil.rmtree(cls.role_path)
 
+        os.chdir('/')
+        shutil.rmtree(cls.temp_dir)
+
     def setUp(self):
         self.default_args = ['ansible-galaxy']