.circleci: Re-do run nightly pipelines on tag (#34148)

Summary:
Commit that this commit relied on was found to be causing issues with
valgrind https://github.com/pytorch/pytorch/issues/33471

Re-does https://github.com/pytorch/pytorch/issues/34078 after revert.

This reverts commit 1aff3e2dd3.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/34148

Differential Revision: D20234451

Pulled By: seemethere

fbshipit-source-id: cb5e496a3f761beeeb0cc8df71f9ebc0b271737b

.circleci/cimodel/data/binary_build_definitions.py

@@ -67,7 +67,17 @@ class Conf(object):
             job_def["requires"].append("update_s3_htmls_for_nightlies_devtoolset7")
             job_def["filters"] = {"branches": {"only": "postnightly"}}
         else:
-            job_def["filters"] = {"branches": {"only": "nightly"}}
+            job_def["filters"] = {
+                "branches": {
+                    "only": "nightly"
+                },
+                # Will run on tags like v1.5.0-rc1, etc.
+                "tags": {
+                    # Using a raw string here to avoid having to escape
+                    # anything
+                    "only": r"/v[0-9]+(\.[0-9]+)*-rc[0-9]+/"
+                }
+            }
         if self.libtorch_variant:
             job_def["libtorch_variant"] = miniutils.quote(self.libtorch_variant)
         if phase == "test":