Copy sources from Versions.props to NuGet.config (#7191)

Author: JC Aguilera

NuGet.config

@@ -8,6 +8,20 @@
     <clear />
     <add key="dotnet-core" value="https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json" />
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+    <add key="fsharp-daily" value="https://www.myget.org/F/fsharp-daily/api/v3/index.json" />
+    <add key="roslyn-master-nightly" value="https://dotnet.myget.org/F/roslyn-master-nightly/api/v3/index.json" />
+    <add key="myget-dotnet-core" value="https://dotnet.myget.org/F/dotnet-core/api/v3/index.json" />
+    <add key="dotnet-buildtools" value="https://dotnet.myget.org/F/dotnet-buildtools/api/v3/index.json" />
+    <add key="roslyn-tools" value="https://dotnet.myget.org/F/roslyn-tools/api/v3/index.json" />
+    <add key="roslyn" value="https://dotnet.myget.org/F/roslyn/api/v3/index.json" />
+    <add key="symreader-converter" value="https://dotnet.myget.org/F/symreader-converter/api/v3/index.json" />
+    <add key="interactive-window" value="https://dotnet.myget.org/F/interactive-window/api/v3/index.json" />
+    <add key="vs-devcore" value="https://myget.org/F/vs-devcore/api/v3/index.json" />
+    <add key="vs-editor" value="https://myget.org/F/vs-editor/api/v3/index.json" />
+    <add key="vssdk" value="https://vside.myget.org/F/vssdk/api/v3/index.json" />
+    <add key="vs-impl" value="https://vside.myget.org/F/vs-impl/api/v3/index.json" />
+    <add key="roslyn_concord" value="https://myget.org/F/roslyn_concord/api/v3/index.json" />
+    <add key="devcore" value="https://vside.myget.org/F/devcore/api/v3/index.json" />
   </packageSources>
   <disabledPackageSources>
     <clear />