title: AzurePS System capability is not available on a newly installed vsts-agent
body: <p>I have successfully installed a new VSTS agent on a new Azure VM - Windows Server 2012 R2 (64bit).  When I am try to execute any pipelines containing azure powershell tasks on the new vsts agent, I get an error message :-</p>
  
  <p>Error message 'No agent found in pool BuildAgent2 which satisfies the specified demands:azureps Agent.Version -gtVersion 2.119.1'</p>
  
  <p>Is there any way to add AzurePS as a system capability ? 
  Please advise on the steps to do this - thanks.</p>