Revert move to TF 2.10-rc1

This reverts commits 6ec41b9
and 1804d49.

A runtime error is introduced, needs more investigation. See
https://github.com/google/ml-compiler-opt/runs/7932290113?check_suite_focus=true

Author: mtrofin

compiler_opt/rl/constant_value_network.py

@@ -45,8 +45,9 @@ def __init__(self, input_tensor_spec, constant_output_val=0, name=None):
 
     self._constant_output_val = constant_output_val
 
-  def call(self, inputs, step_type=None, network_state=(), training=False):
+  def call(self, observation, step_type=None, network_state=(), training=False):
     _ = (step_type, training)
-    shape = nest_utils.get_outer_array_shape(inputs, self._input_tensor_spec)
+    shape = nest_utils.get_outer_array_shape(observation,
+                                             self._input_tensor_spec)
     return tf.constant(
         self._constant_output_val, tf.float32, shape=shape), network_state

requirements.txt

@@ -1,4 +1,4 @@
-absl-py==1.0.0
+absl-py==0.11.0
 astunparse==1.6.3
 cachetools==4.2.2
 certifi==2021.5.30
@@ -18,9 +18,9 @@ grpcio==1.39.0
 gym==0.19.0
 h5py==3.6.0
 idna==3.2
-keras==2.10-rc1
+keras==2.7.0
 keras-preprocessing==1.1.2
-libclang==13.0.0
+libclang==12.0.0
 markdown==3.3.4
 numpy==1.22.1
 oauthlib==3.1.1
@@ -37,11 +37,11 @@ rsa==4.7.2
 scipy==1.7.1
 setuptools==57.4.0
 six==1.16.0
-tensorboard==2.9
+tensorboard==2.7.0
 tensorboard-data-server==0.6.1
 tensorboard-plugin-wit==1.8.0
-tensorflow==2.10-RC1
-tensorflow-estimator==2.10-rc0
+tensorflow==2.7.0
+tensorflow-estimator==2.7.0
 tensorflow-io-gcs-filesystem==0.23.1
 tensorflow-probability==0.15.0
 termcolor==1.1.0