Update NuGetCommand to use nuget.config (#1434)

.pipelines/build.yml

@@ -49,6 +49,10 @@ jobs:
 
   - task: NuGetCommand@2
     displayName: NuGet restore
+    inputs:
+      command: 'restore'
+      feedsToUse: config
+      nugetConfigPath: NuGet.config
 
   - task: CmdLine@2
     displayName: Build Tools
@@ -322,6 +326,10 @@ jobs:
 
   - task: NuGetCommand@2
     displayName: NuGet restore
+    inputs:
+      command: 'restore'
+      feedsToUse: config
+      nugetConfigPath: NuGet.config
 
   - task: DownloadPipelineArtifact@1
     displayName: Download x86 Artifacts

.pipelines/jobs/OneBranchBuild.yml

@@ -51,6 +51,8 @@ jobs:
       inputs:
         command: 'restore'
         restoreSolution: '$(Build.SourcesDirectory)\cppwinrt.sln'
+        feedsToUse: config
+        nugetConfigPath: NuGet.config
 
     - task: VSBuild@1
       displayName: Build fast_fwd
@@ -72,6 +74,8 @@ jobs:
       inputs:
         command: 'restore'
         restoreSolution: '$(Build.SourcesDirectory)\natvis\cppwinrtvisualizer.sln'
+        feedsToUse: config
+        nugetConfigPath: NuGet.config
         
     - task: VSBuild@1
       displayName: Build Component visualizer

.pipelines/jobs/OneBranchTest.yml

@@ -80,6 +80,8 @@ jobs:
       inputs:
         command: 'restore'
         restoreSolution: '$(Build.SourcesDirectory)\cppwinrt.sln'
+        feedsToUse: config
+        nugetConfigPath: NuGet.config
 
     - task: PowerShell@2
       displayName: Remove cppwinrt dependency from test projects

.pipelines/jobs/OneBranchVsix.yml

@@ -56,6 +56,8 @@ jobs:
       inputs:
         command: 'restore'
         restoreSolution: '$(Build.SourcesDirectory)\vsix\vsix.sln'
+        feedsToUse: config
+        nugetConfigPath: NuGet.config
 
     - task: DownloadPipelineArtifact@2
       displayName: 'Download x86 binaries'