It would be nice if the following properties could be set in the Connection URL as individual broker properties.
Currently these are only specified as System properties, hence enforced for all connections within the same JVM.
1. heartbeat - the heartbeat in secs
2. sasl_mechs - the SASL mechanisms to use
3. sasl_encryption - whether SASL encryption should be used
5. sasl_protocol - used to specify the kerberos service principle name
6. sasl_server - used to specify the kerberos server name.