previous gradient implementation.
    *   Added a new session config setting `internal_fragmentation_fraction`,
        which controls when the BFC Allocator needs to split an oversized chunk
        to satisfy an allocation request.
    *   Added `tf.get_current_name_scope()` which returns the current full name
        scope string that will be prepended to op names.
*   `tf.data`:

  
   - `.bindTimeoutSeconds` was moved as part of plugin args for `VolumeBinding`,
     which can be configured separately per profile.
   - `.extenders` are updated to satisfy API standards. In particular:
     - `.extenders` decoding is case sensitive. All fields are affected.
     - `.extenders[*].httpTimeout` is of type `metav1.Duration`.