add MY_AMQP_ZONE to cfg

kamailio/local.cfg

@@ -37,6 +37,7 @@
 ## CHANGE "kazoo://guest:guest@127.0.0.1:5672" TO THE AMQP URL
 ##     This should be the primary RabbitMQ server
 ##     in the zone that this server will service.
+# # #!substdef "!MY_AMQP_ZONE!local!g"
 # # #!substdef "!MY_AMQP_URL!amqp://guest:guest@127.0.0.1:5672!g"
 
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