API to get detailed LRA information should not include stats type data

The interface to obtain information about an LRA [1] includes data such as when the LRA was started and ended. This type of information is more appropriate to monitoring and statistics gathering rather than core LRA info. Not all implementations may want to / be able to report these accurately so perhaps move them to an extended optional interface

[1] https://github.com/jbosstm/narayana/blob/master/rts/lra/lra-client/src/main/java/io/narayana/lra/client/LRAInfoImpl.java#L90