Merged PR 564947: Upgrade CB.QTest to 20.7.17.160336

In this version, removed further dependencies of QTest on CloudBuild/BuildXL binaries.

Related work items: #1743665

cg/nuget/cgmanifest.json

@@ -132,7 +132,7 @@
         "Type": "NuGet",
         "NuGet": {
           "Name": "CB.QTest",
-          "Version": "20.7.9.172145"
+          "Version": "20.7.17.160336"
         }
       }
     },

config.microsoftInternal.dsc

@@ -18,7 +18,7 @@ export const pkgs = isMicrosoftInternal ? [
     { id: "Aria.Cpp.SDK.osx-x64", version: "8.5.6" },
     { id: "Aria.Cpp.SDK.win-x64", version: "8.5.6", osSkip: [ "macOS", "unix" ] },
 
-    { id: "CB.QTest", version: "20.7.9.172145", osSkip: [ "macOS", "unix" ] },
+    { id: "CB.QTest", version: "20.7.17.160336", osSkip: [ "macOS", "unix" ] },
 
     { id: "BuildXL.Tracing.AriaTenantToken", version: "1.0.0" },