changelog for JENKINS-20191

changelog.html

@@ -61,6 +61,9 @@ Upcoming changes</a>
   <li class=bug>
     Linkage error in <code>InitializerFinder.discoverTasks</code> blocks startup.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-20442">issue 20442</a>)
+  <li class=rfe>
+    Add Test button to check proxy connection
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-20191">issue 20191</a>)
   <li class=rfe>
     Show different “up” link for jobs in folders.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-20106">issue 20106</a>)