debian/freeswitch.init: don't start fresswitch before network

debian/freeswitch.init

 #! /bin/sh
 ### BEGIN INIT INFO
 # Provides:          freeswitch
-# Required-Start:    $local_fs $remote_fs
-# Required-Stop:     $local_fs $remote_fs
+# Required-Start:    $network $local_fs $remote_fs
+# Required-Stop:     $network $local_fs $remote_fs
 # Default-Start:     2 3 4 5
 # Default-Stop:      0 1 6
 # Short-Description: The FreeSwitch Voice Switching System