Update label_image.py to be compatible with TF 2.x
Have you tested this? It looks like it relies on some data files that don't exist:

tensorflow/examples/label_image/data/inception_v3_2016_08_28_frozen.pb Hi @MarkDaoust 

I have tested the changes by following the [instructions](https://github.com/tensorflow/tensorflow/tree/master/tensorflow/examples/label_image#to-buildinstallrun) given to run the label_image.py.

The model and sample data has also been provided as a part of it.

Please find the attached [gist](https://colab.research.google.com/gist/pjpratik/b596e519deb7da70e8639b3846b3e7e7/60006.ipynb) with tests using the proposed commit.

Thanks. SGTM thanks!
The label_image.py is outdated. Added necessary changes to be able to run in TF 2.x version.  Please do the needful.

Fixes #59900

Thanks.