Add a commented out pre-shared key to the sample event_multicast.conf.xml file

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13903 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/autoload_configs/event_multicast.conf.xml

@@ -4,6 +4,10 @@
     <param name="port" value="4242"/>
     <param name="bindings" value="all"/>
     <param name="ttl" value="1"/>
+    <!-- Uncomment this to enable pre-shared key encryption on the packets. -->
+    <!-- For this option to work, you'll need to have the openssl development -->
+    <!-- headers installed when you ran ./configure -->
+    <!-- <param name="psk" value="ClueCon"/> -->
   </settings>
 </configuration>