Documented configuration option for url

contrib/inventory/consul_io.py

@@ -50,6 +50,12 @@ Other options include:
 
 which restricts the included nodes to those from the given datacenter
 
+'url':
+
+the URL of the Consul cluster. host, port and scheme are derived from the
+URL. If not specified, connection configuration defaults to http requests
+to localhost on port 8500.
+
 'domain':
 
 if specified then the inventory will generate domain names that will resolve