loadListeners
public static void loadListeners()
Start listeners for all the Listening Inbound Endpoints. This should be called in the
server startup to load all the required listeners for endpoints in all tenants
Inbound Endpoint Persistence service need to be up and running before calling this method.
So the ServiceBusInitializer activate() method is the ideal place as it
guarantee that Inbound Endpoint Persistence Service is activated.
We cannot make this a osgi service as this is a fragment of synapse-core.
So to make sure persistence service is available, we need to depend on some other technique
like the one described above