Update Merian and DECam pipelines to include SkyCorr and ampoffset correction

pipelines/DECam/DRP-Merian.yaml

@@ -38,8 +38,16 @@ tasks:
             )
           }
           config.fit_coadd_multiband.action_initializer = MakeCachedChainedInitializerAction()
+          config.fit_coadd_multiband.bands_fit=['N540', 'N708']
   computeObjectEpochs:
     class: lsst.drp.tasks.compute_object_epochs.ComputeObjectEpochsTask
     config:
       python: |
         config.bands=['N540', 'N708']
+  consolidateObjectTable:
+    class: lsst.pipe.tasks.postprocess.ConsolidateObjectTableTask
+    config:
+      python: |
+        config.actions.extendedness.bands = ['N540', 'N708']
+        config.actions.extendedness.bands_combined.clear()
+        config.actions.extendedness.bands_combined["N540_N708"] = "N540,N708"

pipelines/_ingredients/DECam/DRP.yaml

@@ -34,6 +34,8 @@ tasks:
     config:
       connections.crosstalkSources: overscanRaw
       doCrosstalk: true
+      doAmpOffset: true
+      ampOffset.doApplyAmpOffset: true
   calibrateImage:
     class: lsst.pipe.tasks.calibrateImage.CalibrateImageTask
     # TODO: these should live in obs_decam, probably!
@@ -44,9 +46,10 @@ tasks:
     class: lsst.drp.tasks.update_visit_summary.UpdateVisitSummaryTask
     config:
       photo_calib_provider: "tract"
-      background_provider: "input_summary"
+      background_provider: "replacement"
       connections.photoCalibName: "jointcal"
       connections.skyWcsName: "jointcal"
+      connections.background_overrides: "skyCorr"
   reprocessVisitImage:
     class: lsst.drp.tasks.reprocess_visit_image.ReprocessVisitImageTask
     config:
@@ -58,6 +61,7 @@ tasks:
       warper.warpingKernelName: lanczos5
       coaddPsf.warpingKernelName: lanczos5
       doSelectPreWarp: true
+      connections.background_apply_list: "skyCorr"
       python: |
         from lsst.pipe.tasks.selectImages import PsfWcsSelectImagesTask
         config.select.retarget(PsfWcsSelectImagesTask)
@@ -152,6 +156,7 @@ subsets:
     subset:
       - consolidatePreSourceTable
       - consolidateVisitSummary
+      - skyCorr
       - isolatedStarAssociation
     description: |
       Global tasks: This is a mix of visit-level and tract-level tasks that