Automatic migration

After installing TensorFlow 2, the migration tool is available from the command line. To convert a project directory, run the following command:

$ tf_upgrade_v2 --intree ./project_directory --outtree ./project_directory_updated

Here is a sample of the command's logs on an example project:

INFO line 1111:10: Renamed 'tf.placeholder' to 'tf.compat.v1.placeholder'
 INFO line 1112:10: Renamed 'tf.layers.dense' to 'tf.compat.v1.layers.dense'
 TensorFlow 2.0 Upgrade Script
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 Converted 21 files
 Detected 1 issues that require attention
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 File: project_directory/test_tf_converter.py
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 project_directory/test_tf_converter.py:806:10: WARNING: tf.image.resize_bilinear called with align_corners argument...