update configs to new class format

config/ppo/WalkerDynamic.yaml

 behaviors:
   WalkerDynamic:
-    trainer: ppo
-    batch_size: 2048
-    beta: 0.005
-    buffer_size: 20480
-    epsilon: 0.2
-    hidden_units: 512
-    lambd: 0.95
-    learning_rate: 0.0003
-    learning_rate_schedule: linear
-    max_steps: 2e7
-    memory_size: 128
-    normalize: true
-    num_epoch: 3
-    num_layers: 3
-    time_horizon: 1000
-    sequence_length: 64
-    summary_freq: 30000
-    use_recurrent: false
-    vis_encode_type: simple
+    trainer_type: ppo
+    hyperparameters:
+      batch_size: 2048
+      buffer_size: 20480
+      learning_rate: 0.0003
+      beta: 0.005
+      epsilon: 0.2
+      lambd: 0.95
+      num_epoch: 3
+      learning_rate_schedule: linear
+    network_settings:
+      normalize: true
+      hidden_units: 512
+      num_layers: 3
+      vis_encode_type: simple
+        gamma: 0.995
-        gamma: 0.995
+    output_path: default
+    keep_checkpoints: 5
+    max_steps: 20000000
+    time_horizon: 1000
+    summary_freq: 30000
+    threaded: true

config/ppo/WalkerStatic.yaml

 behaviors:
   WalkerStatic:
-    trainer: ppo
-    batch_size: 2048
-    beta: 0.005
-    buffer_size: 20480
-    epsilon: 0.2
-    hidden_units: 512
-    lambd: 0.95
-    learning_rate: 0.0003
-    learning_rate_schedule: linear
-    max_steps: 2e7
-    memory_size: 128
-    normalize: true
-    num_epoch: 3
-    num_layers: 3
-    time_horizon: 1000
-    sequence_length: 64
-    summary_freq: 30000
-    use_recurrent: false
-    vis_encode_type: simple
+    trainer_type: ppo
+    hyperparameters:
+      batch_size: 2048
+      buffer_size: 20480
+      learning_rate: 0.0003
+      beta: 0.005
+      epsilon: 0.2
+      lambd: 0.95
+      num_epoch: 3
+      learning_rate_schedule: linear
+    network_settings:
+      normalize: true
+      hidden_units: 512
+      num_layers: 3
+      vis_encode_type: simple
+        gamma: 0.995
-        gamma: 0.995
+    output_path: default
+    keep_checkpoints: 5
+    max_steps: 20000000
+    time_horizon: 1000
+    summary_freq: 30000
+    threaded: true