Enable MyGet uploads again (dotnet#2961)

Author: shauheen

build/vsts-ci.yml

@@ -234,13 +234,12 @@ phases:
       nuGetFeedType: internal 
       feedPublish: MachineLearning
 
-  # Temporarily disable myget publishing - https://github.com/dotnet/machinelearning/issues/2244
-  # - task: MSBuild@1
-  #   displayName: Publish Packages to MyGet Feed
-  #   inputs:
-  #     solution: build/publish.proj
-  #     msbuildArguments: /t:PublishPackages /p:NuGetFeedUrl=$(_NuGetFeedUrl) /p:NuGetApiKey=$(dotnet-myget-org-api-key)
-  #     msbuildVersion: 15.0
+  - task: MSBuild@1
+    displayName: Publish Packages to MyGet Feed
+    inputs:
+      solution: build/publish.proj
+      msbuildArguments: /t:PublishPackages /p:NuGetFeedUrl=$(_NuGetFeedUrl) /p:NuGetApiKey=$(dotnet-myget-org-api-key)
+      msbuildVersion: 15.0
 
   - task: MSBuild@1
     displayName: Publish Symbols to SymWeb Symbol Server