Disable TerminalLogger for Helix tests

Author: MackinnonBuck

.azure/pipelines/ci-public.yml

@@ -570,11 +570,13 @@ stages:
         # Build the shared framework
         - script: ./eng/build.cmd -ci -prepareMachine -nativeToolsOnMachine -nobl -all -pack -arch x64
                   /p:CrossgenOutput=false /p:ASPNETCORE_TEST_LOG_DIR=artifacts/log $(_InternalRuntimeDownloadArgs)
+                  /p:VsTestUseMSBuildOutput=false
           displayName: Build shared fx
         # -noBuildRepoTasks -noBuildNative -noBuild to avoid repeating work done in the previous step.
         - script: ./eng/build.cmd -ci -prepareMachine -nativeToolsOnMachine -nobl -all -noBuildRepoTasks -noBuildNative -noBuild -test
                   -projects eng\helix\helix.proj /p:IsHelixPRCheck=true /p:IsHelixJob=true
                   /p:CrossgenOutput=false /p:ASPNETCORE_TEST_LOG_DIR=artifacts/log $(_InternalRuntimeDownloadArgs)
+                  /p:VsTestUseMSBuildOutput=false
           displayName: Run build.cmd helix target
           env:
             HelixApiAccessToken: $(HelixApiAccessToken) # Needed for internal queues