add old crawler

config/ppo_transfer/CrawlerStatic.yaml

 behaviors:
-  CrawlerStatic:
+  OldCrawlerStatic:
     trainer_type: ppo_transfer
     hyperparameters:
       batch_size: 2024
       feature_size: 64
       reuse_encoder: true
       in_epoch_alter: true
+      use_inverse_model: true
     network_settings:
       normalize: true
       hidden_units: 512

config/ppo_transfer/CrawlerStaticOpbuffer.yaml

 behaviors:
-  CrawlerStatic:
+  OldCrawlerStatic:
     trainer_type: ppo_transfer
     hyperparameters:
       batch_size: 2024

config/ppo_transfer/CrawlerStaticVar.yaml

 behaviors:
-  CrawlerStatic:
+  OldCrawlerStatic:
     trainer_type: ppo_transfer
     hyperparameters:
       batch_size: 2024