[Reland][BE] add test wall time report (#61389)

Summary:
This is a reland of https://github.com/pytorch/pytorch/issues/61322.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/61389

Reviewed By: malfet

Differential Revision: D29601573

Pulled By: walterddr

fbshipit-source-id: dfb2bdc7d72d493c01b9dbac50ef9b79c1782054

tools/stats/print_test_stats.py

@@ -700,6 +700,7 @@ def build_info() -> ReportMetaMeta:
         "build_branch": os.environ.get("CIRCLE_BRANCH", ""),
         "build_job": os.environ.get("JOB_BASE_NAME", ""),
         "build_workflow_id": os.environ.get("CIRCLE_WORKFLOW_ID", ""),
+        "build_start_time_epoch": str(int(os.path.getmtime(os.path.realpath(__file__)))),
     }
 
 

tools/stats/s3_stat_parser.py

@@ -48,6 +48,7 @@ class ReportMetaMeta(TypedDict):
     build_branch: str
     build_job: str
     build_workflow_id: str
+    build_start_time_epoch: str
 
 
 class ReportMeta(ReportMetaMeta):

tools/test/test_stats.py

@@ -22,6 +22,7 @@ def dummy_meta_meta() -> ReportMetaMeta:
         'build_branch': '',
         'build_job': '',
         'build_workflow_id': '',
+        'build_start_time_epoch': '',
     }