Fixup feeds (#398)

Co-authored-by: Matt Mitchell <mmitche@microsoft.com>

Author: dotnet-bot

.nuget/NuGet.Config

@@ -4,14 +4,12 @@
     <add key="disableSourceControlIntegration" value="true" />
   </solution>
   <packageSources>
-    <add key="NuGet official package source" value="https://api.nuget.org/v3/index.json" />
-    <add key="Katana Nightly" value="https://dotnet.myget.org/F/katana-dev/api/v3/index.json" />
-    <add key="Katana Nightly Release" value="https://dotnet.myget.org/F/katana-release/api/v3/index.json" />
-    <add key="AzureAd Nightly" value="https://www.myget.org/F/azureadwebstacknightly/" />
+    <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
+    <add key="myget-legacy" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/myget-legacy/nuget/v3/index.json" />
   </packageSources>
   <disabledPackageSources />
   <activePackageSource>
-    <add key="NuGet official package source" value="https://api.nuget.org/v3/index.json" />
-    <add key="Katana Nightly" value="https://dotnet.myget.org/F/katana-dev/api/v3/index.json" />
+    <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
+    <add key="myget-legacy" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/myget-legacy/nuget/v3/index.json" />
   </activePackageSource>
 </configuration>

build/Sakefile.shade

@@ -21,8 +21,8 @@ var TEST_DIR='${Path.Combine(TARGET_DIR, "test")}'
 var SIGN_DIR='${Path.Combine(TARGET_DIR, "sign")}'
 var PACKAGE_DIR='${Path.Combine(TARGET_DIR, "package")}'
 
-var NUGET_GALLERY_SOURCE='https://api.nuget.org/v3/index.json'
-var NUGET_ASPNET_SOURCE='https://dotnet.myget.org/F/katana-dev/api/v3/index.json'
+var NUGET_GALLERY_SOURCE='https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json'
+var NUGET_ASPNET_SOURCE='https://pkgs.dev.azure.com/dnceng/public/_packaging/myget-legacy/nuget/v3/index.json'
 -// var NUGET_AZUREAD_SOURCE='https://www.myget.org/F/azureadwebstacknightly/'
 var NUGET_AZUREAD_SOURCE=''