cmake error TF_FRAMEWORK-NOTFOUND

cmake error while build in docker
```
-- tensorflow_framework library found: in TF_FRAMEWORK-NOTFOUND
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
TF_FRAMEWORK
```

The reason is that `libtensorflow_framework.so` does't exist, so make a link to the so.

Solution:
```
root@16497131a7c1:/tmp/Euler/build# python -c "import tensorflow as tf; print(tf.sysconfig.get_lib())"
/usr/local/lib/python2.7/dist-packages/tensorflow
root@16497131a7c1:/tmp/Euler/build# ll /usr/local/lib/python2.7/dist-packages/tensorflow/libtensorflow_framework.so.1
-rwxr-xr-x 1 root staff 34748520 Sep 2 02:51 /usr/local/lib/python2.7/dist-packages/tensorflow/libtensorflow_framework.so.1*
root@16497131a7c1:/tmp/Euler/build# cd /usr/local/lib/python2.7/dist-packages/tensorflow/
root@16497131a7c1:/usr/local/lib/python2.7/dist-packages/tensorflow# ln -s libtensorflow_framework.so.1 libtensorflow_framework.so
```

Start by reproducing the Docker build and inspect the CMake files that define and test TF_FRAMEWORK. Compare the lookup with the TensorFlow library path returned by tf.sysconfig.get_lib() and the libtensorflow_framework.so.1 location shown in the report. Done means the build resolves TF_FRAMEWORK without a manual symlink.

Written by the indexing model from the issue text.