Merged PR 296820: [release/2.1.5xx-MSRC] Feed update

- If this PR should not run tests please add text "skip[REMOVE_THIS]ci[REMOVE_THIS]please" (remove the marked text, no quotes).
- Please add description for changes you are making.
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Feed update

Author: mmitche

TestAssets/TestPackages/dotnet-desktop-and-portable/NuGet.Config

@@ -4,6 +4,6 @@
     <!--To inherit the global NuGet package sources remove the <clear/> line below -->
     <clear />
     <add key="dotnet-core" value="https://dotnetmygetlegacy.blob.core.windows.net/dotnet-core/index.json" />
-    <add key="api.nuget.org" value="https://api.nuget.org/v3/index.json" />
+    <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
   </packageSources>
 </configuration>

build/NugetConfigFile.targets

@@ -25,7 +25,7 @@
   	<add key="websdk" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/myget-legacy/nuget/v3/index.json" />
     <add key="roslyn" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/myget-legacy/nuget/v3/index.json" />
     <add key="nuget-build" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/myget-legacy/nuget/v3/index.json" />
-    <add key="api.nuget.org" value="https://api.nuget.org/v3/index.json" />
+    <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
     <add key="container-tools" value="https://www.myget.org/F/container-tools-for-visual-studio/api/v3/index.json" />
     <add key="linux-musl-bootstrap-feed" value="https://dotnetfeed.blob.core.windows.net/orchestrated-release-2-1/20180420-03/aspnet-inputs/index.json" />
     <add key="dotnet-msbuild" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/myget-legacy/nuget/v3/index.json" />

build_projects/update-dependencies/update-dependencies.csproj

@@ -7,7 +7,7 @@
     <TargetFramework>netcoreapp2.1</TargetFramework>
     <RestoreSources>
       https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json;
-      https://api.nuget.org/v3/index.json;
+      https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json;
     </RestoreSources>
   </PropertyGroup>
 

test/Microsoft.DotNet.Tools.Tests.Utilities/NuGetConfig.cs

@@ -15,7 +15,7 @@ public static void Write(string directory)
 <!--To inherit the global NuGet package sources remove the <clear/> line below -->
 <clear />
 <add key=""dotnet-core"" value=""https://dotnetmygetlegacy.blob.core.windows.net/dotnet-core/index.json"" />
-<add key=""api.nuget.org"" value=""https://api.nuget.org/v3/index.json"" />
+<add key=""dotnet-public"" value=""https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json"" />
 </packageSources>
 </configuration>";
 
@@ -32,7 +32,7 @@ public static void Write(string directory, string configname, string localFeedPa
 <!--To inherit the global NuGet package sources remove the <clear/> line below -->
 <clear />
 <add key=""Test Source"" value=""{0}"" />
-<add key=""api.nuget.org"" value=""https://api.nuget.org/v3/index.json"" />
+<add key=""dotnet-public"" value=""https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json"" />
 <add key=""dotnet-core"" value=""https://dotnetmygetlegacy.blob.core.windows.net/dotnet-core/index.json"" />
 </packageSources>
 </configuration>";