[ITA-254] Mark hadoop as changed, when building hadoop is required. (#2171)
[ITA-254] Mark hadoop as changed, when building hadoop is required. (#2171)


h2oai/h2o-dev,h2oai/h2o-3,h2oai/h2o-3,michalkurka/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,spennihana/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,spennihana/h2o-3,spennihana/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,spennihana/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-dev,h2oai/h2o-3,h2oai/h2o-dev,h2oai/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,spennihana/h2o-3