set hold_music as a global

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8090 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/vars.xml

@@ -4,6 +4,7 @@
   <X-PRE-PROCESS cmd="set" data="sound_prefix=$${base_dir}/sounds/en/us/callie"/>
   <X-PRE-PROCESS cmd="set" data="domain=$${local_ip_v4}"/>
   <X-PRE-PROCESS cmd="set" data="moh_uri=local_stream://moh"/>
+  <X-PRE-PROCESS cmd="set" data="hold_music=local_stream://moh"/>
   <!-- xmpp_client_profile and xmpp_server_profile
        xmpp_client_profile can be any string. 
        xmpp_server_profile is appended to "dingaling_" to form the database name