support roberta (#200)

paddlehub/module/module.py

@@ -576,7 +576,7 @@ class Module(object):
                 fetch_dict[key] = program.global_block().var(var.name)
 
         # update BERT/ERNIE's input tensor's sequence length to max_seq_len
-        if self.name.startswith("bert") or self.name.startswith("ernie"):
+        if "bert" in self.name or self.name.startswith("ernie"):
             MAX_SEQ_LENGTH = 512
             if max_seq_len > MAX_SEQ_LENGTH or max_seq_len <= 0:
                 raise ValueError(