Jenkins CI driver can start but Spinnaker fails to monitor the Jenkins job (Tomcat Server)

Issue

When a Jenkins CI provider is set up, it is possible to add a master with a Jenkins service account/API token. The pipeline is kicked off from a Jenkins job and is able to execute.However, it fails almost immediately with an HTTP 400 error bad request upon trying to monitor the status of the job it ran.The error starts around the line: Error running MonitorJenkinsJobTask for pipeline[**] The Jenkins environment would be hosted in a Tomcat server. In this test and example, the environment is:

• Java 8u144* Tomcat 8.5.23* Jenkins 2.176.4

Cause

Tomcat ends up blocking the characters within a Jenkins' URL.  For example, when Jenkins' API URL includes  the pipe single character | or in the "exclude" portion of a query string {}.When either the URL or query string includes those characters, Tomcat would throw a 500 response; not including it gave the aforementioned log message with a 400 response.