Update expected dependency list for liveshare.

src/Setup/DevDivInsertionFiles/DevDivInsertionFiles.csproj

@@ -59,7 +59,7 @@
     <!-- We do not have a training scenario that covers lib/netstandard2.0/System.Text.Encoding.CodePages.dll  -->
     <ExpectedDependency Include="System.Text.Encoding.CodePages" />
     <ExpectedDependency Include="System.Numerics.Vectors"/>
-
+    <ExpectedDependency Include="System.ValueTuple"/>
     <!--
       Do not overwrite optimization data for this binary for now.
       This assembly is signed by Open key in CoreFX and MicroBuild does not support this key.