The LRA module uses inconsistent way of logging. Some parts uses the com.arjuna.ats.arjuna.logging which is wrong as it should define its own logger category to use in LRA. Other ones uses System.out|err for printing log information.

Up to that there should be more consistency and more informative for user.

• There are hidden reasons of some failures in some places.
• The error messages get from the URL queries are unclear in some cases, e.g.
  not present: null: Cannont connect to an LRA coordinator: Connection refused
  (what does means not present and why null? this is a bit misguiding info which is not necessary to be part of the error message)