[FIXED JENKINS-22442]

Avoid extracting war file under /tmp. When jar files and resource files disappear from under
us, all sorts of strange errors happen.

changelog.html

@@ -69,6 +69,9 @@ Upcoming changes</a>
   <li class=bug>
     Fixed a slow down in resource loading caused by fix to JENKINS-18677.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-21579">issue 21579</a>)
+  <li class=bug>
+    <tt>jenkins.war</tt> file shouldn't be exploded into <tt>/tmp</tt>
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-22442">issue 22442</a>)
   <li class=bug>
     Fixed NPE in <tt>UserCause</tt>
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-21875">issue 21875</a>)

war/pom.xml

@@ -103,7 +103,7 @@ THE SOFTWARE.
       -->
       <groupId>org.jenkins-ci</groupId>
       <artifactId>winstone</artifactId>
-      <version>2.1</version>
+      <version>2.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>