Make SASL authentication attempts count configurable.

8 authentication attemps are allowed, so after 8 failed mechanisms is terminated with error "Too many authentication failures; connection terminated"

8 attempts are hardcoded in jboss-remoting, cannot be configured now: https://github.com/jboss-remoting/jboss-remoting/blob/master/src/main/java/org/jboss/remoting3/remote/ServerConnectionOpenListener.java#L78

Make this authentication attempts configurable.