update for previous issue: Beta-7 different outputs on GPU and CPU regression

[nuratikah-certifai]

Describe the issue
follow up old issue for regression output using different backend

Links
CertifaiAI/cdle-traininglabs#124

Desktop (please complete the following information):

• OS: Windows
• DL4J: deeplearning4j 1.0.0-beta7
• CUDA: 10.2
• cuDNN: 7.6

Additional context
request an update: The results of regression (eg. BostonHousePricePrediction.java) running on GPU are not same as results running on CPU. Attached are the screenshot of the results.

[yinchuangsum]

Problem related to dl4j library.
Issue has been raised in respective repo.
deeplearning4j/deeplearning4j#9199