Tensorflow not working in Zeppelin 0.7.0

When using python kernel in Zeppelin 0.7.0 loading Tensorflow throws an error:
`NameError: name _interactive is not defined`

Similar issues are reported in SO http://stackoverflow.com/questions/42757433/tensorflow-can-not-work-with-zeppelin. The fix suggested there seems to be really hacky.

The issue seems to be that in tf_logging.py file [.\Anaconda3\Lib\site-packages\tensorflow\python\platform\tf_logging.py] the _interactive variable is not triggering for Zeppelin.

```

1. Determine whether we are in an interactive environment
   try:
2. This is only defined in interactive shells
   if _sys.ps1: _interactive = True
   except AttributeError:
3. Even now, we may be in an interactive shell with `python -i`.
   _interactive = _sys.flags.interactive
   ```