[JENKINS-10955] add changelog entry

changelog.html

@@ -66,6 +66,9 @@ Upcoming changes</a>
 <div id="rc" style="display:none;"><!--=BEGIN=-->
 <h3><a name=v1.433>What's new in 1.433</a> <!--=DATE=--></h3>
 <ul class=image>
+  <li class=bug>
+    "Alternate settings file" build parameter is getting cleaned after job execution
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-10955">issue 10955</a>)
   <li class=bug>
     Port on HTTP Proxy Configure accepts characters except the digits
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-11068">issue 11068</a>)