I believe that Jenkins plugin communicates with CDA WebServices (part of CDA ASP.NET app running on IIS).
@Automic support, feel free to correct me if my assumptions is wrong.
If you only have AWA without CDA, I am not sure if that plugin will work for you.
We do use that Jenkins Plugin successfully with 12.2 CDA
No additional installation of WebServices WAR file on AE/AWI side was required.
Hopefully this helps.