Bug 1866550 - Ingest replicates for speedometer3 on mozilla-central. (#7886)

This patch enables replicate ingestion into the performance_datum_replicate table on mozilla-central for only speedometer3 tests.

treeherder/etl/perf.py

@@ -119,15 +119,20 @@ def _test_should_alert_based_on(
 
 
 def _test_should_gather_replicates_based_on(
-    repository: Repository, replicates: Optional[List] = None
+    repository: Repository, suite_name: str, replicates: Optional[List] = None
 ) -> bool:
     """
     Determine if we should gather/ingest replicates. Currently, it's
     only available on the try branch. Some tests also don't have replicates
     available as it's not a required field in our performance artifact
-    schema.
+    schema. Replicates are also gathered for speedometer3 tests from
+    mozilla-central.
     """
-    return replicates and len(replicates) > 0 and repository.name in ("try",)
+    if replicates and len(replicates) > 0:
+        return repository.name in ("try",) or (
+            repository.name in ("mozilla-central",) and suite_name == "speedometer3"
+        )
+    return False
 
 
 def _load_perf_datum(job: Job, perf_datum: dict):
@@ -286,7 +291,7 @@ def _load_perf_datum(job: Job, perf_datum: dict):
             )
 
             if _test_should_gather_replicates_based_on(
-                job.repository, subtest.get("replicates", [])
+                job.repository, suite["name"], subtest.get("replicates", [])
             ):
                 try:
                     # Add the replicates to the PerformanceDatumReplicate table, and