add dp config (#3822)

Author: gzy19990617

fastdeploy/rl/rollout_config.py

@@ -60,6 +60,7 @@ def __init__(
         early_stop_config: str = None,
         local_rank: int = 0,
         moba_attention_config: str = None,
+        data_parallel_size: int = 1,
     ):
         # Required parameters
         self.model = model_name_or_path
@@ -95,6 +96,7 @@ def __init__(
         self.splitwise_role = splitwise_role
         self.expert_parallel_size = expert_parallel_size
         self.enable_expert_parallel = enable_expert_parallel
+        self.data_parallel_size = data_parallel_size
         self.ori_vocab_size = ori_vocab_size
         self.quantization = quantization
         self.guided_decoding_backend = guided_decoding_backend