Fix style nit, line end for test file

Author: sergiocarlosmorales

tests/CLI/modules/subnet_tests.py

@@ -34,4 +34,4 @@ def test_detail(self):
                 'hardware': 'none',
                 'usable ips': 22
             },
-            json.loads(result.output))
+            json.loads(result.output))