Revert to older skymap dataset type names in processing.

python/lsst/ap/verify/pipeline_driver.py

@@ -169,6 +169,14 @@ def runApPipeGen3(workspace, parsedCmdLine, processes=1):
     pipelineArgs.extend(["--processes", str(processes)])
     pipelineArgs.extend(["--register-dataset-types"])
 
+    # TODO: this config option resets the skymap dataset type to the templated
+    # name used by default prior to DM-27147.  After RFC-471 is adopted, the
+    # ap_verify test data should be migrated to use the new dataset type name
+    # (and collection naming convention) and this config override can be
+    # removed (other changes will probably be necessary as well, to reflect
+    # changes to the collection naming conventions).
+    pipelineArgs.extend(["--config", "imageDifference:connections.skyMap='{skyMapName}Coadd_skyMap'"])
+
     if not parsedCmdLine.skip_pipeline:
         # CliRunner is an unsafe workaround for DM-26239
         runner = click.testing.CliRunner()