Allow customization (name, description) of JMX managed methods' parameters

Currently, it is not possible to name or give a description to parameters of @JmxManaged methods as DynamicMBeanWrapper uses the simple MBeanOperationInfo constructor which gives generic names to parameters like p0, p1, p2...

It would be nice if we could annotate parameters with something like @JmxParameter(name = ..., description = ...) or - if using java 8 - use the parameter name which is available via reflection.