presubmit failed when build gpu version

[zlcnju]

related 1759

1. The error is because the install of the tensorflow_serving_api has tensoflow dependency, but when build gpu version, the tensoflow is not installed and replaced by tensorflow-gpu. So, the reinstall of tensorflow(in fact 1.11.0) will occur. This causes problem.
   Related tensorflow/serving issue:

• pip install tensorflow-serving-api with tensorflow-gpu
• Apt-get Install does not use GPU

2. I tried to adjust the order of the install of the tensorfow_serving_api and tensorflow-gpu(first install tensorflow_serving_api and it caused the install of tensorflow, then install tensorflow-gpu ). But it gets another error occuring because tensorflow-data-validation has dependency tensorflow. The error has not any relation with tensorflow_serving_api.
3. Anyone familiar with the dependency between them, especially the gpu version? Or can we just install everything and install the tensorflow gpu at last.