making SSHD startup failure non-fatal

changelog.html

@@ -73,6 +73,8 @@ Upcoming changes</a>
   <li class=bug>
     Rotation of slave agent launch logs is broken for Windows masters.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-15408">issue 15408</a>)
+  <li class=bug>
+    Failure to initialie the SSH daemon shouldn't fail the boot.
 </ul>
 </div><!--=TRUNK-END=-->
 

war/pom.xml

@@ -125,7 +125,7 @@ THE SOFTWARE.
     <dependency>
       <groupId>org.jenkins-ci.modules</groupId>
       <artifactId>sshd</artifactId>
-      <version>1.3</version>
+      <version>1.4</version>
     </dependency>
     <dependency>
       <!--