Use Linux machine with Chrome

Author: BrennanConroy

.azure/pipelines/jobs/default-build.yml

@@ -112,7 +112,7 @@ jobs:
             vmImage: ubuntu-20.04
           ${{ else }}:
             name: $(DncEngPublicBuildPool)
-            demands: ImageOverride -equals Build.Ubuntu.2004.Amd64.Open
+            vmImage: ubuntu-20.04
         ${{ if eq(parameters.agentOs, 'Windows') }}:
           name: $(DncEngPublicBuildPool)
           demands: ImageOverride -equals windows.vs2022preview.amd64.open