Download WAN performance artifacts for perf merging (#1188)

.azure/azure-pipelines.ci.yml

@@ -339,6 +339,7 @@ stages:
     condition: succeededOrFailed()
     dependsOn:
     - performance
+    - wanperf
     jobs:
     - template: ./templates/post-process-performance.yml
 

.azure/templates/post-process-performance.yml

@@ -28,6 +28,12 @@ jobs:
       artifactName: performance
       downloadPath: msquic/artifacts/PerfDataResults
 
+  - task: DownloadBuildArtifacts@0
+    displayName: Download WAN Perf Artifacts
+    inputs:
+      artifactName: wanperformance
+      downloadPath: msquic/artifacts/wanperformance
+
   - task: Powershell@2
     displayName: Merge coverage (Release)
     condition: and(in(variables['Build.Reason'], 'IndividualCI', 'BatchedCI'), not(startsWith(variables['Build.SourceBranch'], 'refs/heads/feature/')))