title: how to get jenkins parameter's default value
body: <p>I want to have a check in jenkins job, where if the jenkins parameters have been modified then I want to display an Input modal to proceed or abort the job .But for that I need to verify if the parameters have been modified. </p>
  
  <p>So, I can get modified parameters value in jenkins job, but how to retrieve default values of those parameters so that I can verify if any parameters have been modified? </p>