Update azure-pipelines.yml for Azure Pipelines

Author: yfranz

azure-pipelines.yml

@@ -28,7 +28,7 @@ steps:
  inputs:
  command: 'build'
  arguments: '--configuration $(buildConfiguration)'
- projects: '$(project)'
+ projects: '$(solution)'
 
 # The second task is dotnet pack command again pointing to the csproj file
 # The nobuild means the project will not be compiled before running pack, because its already built in above step