Test failures print message in assertNormsClose

Summary: Restore assertNormsClose's printing of its message on failure which I broke in D26233419 (https://github.com/facebookresearch/pytorch3d/commit/cd9786e787386c185ef915b3983c5d2861a32907).

Reviewed By: nikhilaravi

Differential Revision: D28799743

fbshipit-source-id: e7a24b2558b68991c731bbd55fb3ca6c1df98f69

tests/common_testing.py

@@ -120,7 +120,7 @@ class TestCaseMixin(unittest.TestCase):
         #    all(norm_fn(input - other) <= atol + rtol * norm_fn(other)).
 
         self.assertClose(
-            diff + other_, other_, rtol=rtol, atol=atol, equal_nan=equal_nan
+            diff + other_, other_, rtol=rtol, atol=atol, equal_nan=equal_nan, msg=msg
         )
 
     def assertClose(