Set copyright and package license (dotnet#319)

Author: tmat

Diff for: Directory.Build.props

@@ -1,16 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project>
-  <PropertyGroup>
-    <ImportNetSdkFromRepoToolset>false</ImportNetSdkFromRepoToolset>
-  </PropertyGroup>
-
   <Import Project="Sdk.props" Sdk="Microsoft.DotNet.Arcade.Sdk" />
-  <PropertyGroup>
-    <RestoreSources Condition="'$(DotNetBuildOffline)' != 'true'">
-      https://ci.appveyor.com/nuget/benchmarkdotnet;
-      https://dotnet.myget.org/F/dotnet-core/api/v3/index.json;
-      $(OverridePackageSource);
-      $(RestoreSources)
-    </RestoreSources>
+
+  <PropertyGroup Condition="'$(CopyrightNetFoundation)' != ''">
+    <Copyright>$(CopyrightNetFoundation)</Copyright>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 </Project>

Diff for: eng/Versions.props

@@ -9,8 +9,10 @@
     <RestoreSources>
       $(RestoreSources);
       https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json;
+      https://dotnet.myget.org/F/dotnet-core/api/v3/index.json;
       https://dotnet.myget.org/F/symreader-converter/api/v3/index.json;
-      https:%2F%2Fdotnet.myget.org/F/symreader/api/v3/index.json;
+      https://dotnet.myget.org/F/symreader/api/v3/index.json;
+      https://ci.appveyor.com/nuget/benchmarkdotnet;
     </RestoreSources>
   </PropertyGroup>
 </Project>