PUBDEV-1843: grid test, subtask 7.  Java error/warning messages are ignored when they are generated for unit tests for gridsearch.  Added code to print out these error/warning message during unit tests so we can better debug our code.
PUBDEV-1843: grid test, subtask 7.  Java error/warning messages are ignored when they are generated for unit tests for gridsearch.  Added code to print out these error/warning message during unit tests so we can better debug our code.

spennihana/h2o-3,jangorecki/h2o-3,jangorecki/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,spennihana/h2o-3,michalkurka/h2o-3,mathemage/h2o-3,h2oai/h2o-dev,YzPaul3/h2o-3,mathemage/h2o-3,YzPaul3/h2o-3,h2oai/h2o-3,jangorecki/h2o-3,mathemage/h2o-3,YzPaul3/h2o-3,mathemage/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,jangorecki/h2o-3,michalkurka/h2o-3,YzPaul3/h2o-3,h2oai/h2o-3,h2oai/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,spennihana/h2o-3,michalkurka/h2o-3,h2oai/h2o-dev,mathemage/h2o-3,YzPaul3/h2o-3,mathemage/h2o-3,jangorecki/h2o-3,jangorecki/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,spennihana/h2o-3,h2oai/h2o-dev,jangorecki/h2o-3,YzPaul3/h2o-3,mathemage/h2o-3,YzPaul3/h2o-3,h2oai/h2o-3,spennihana/h2o-3