Fix GPT2Config parameters in GPT2ModelTester (#13630)

tests/test_modeling_gpt2.py

@@ -141,10 +141,10 @@ class GPT2ModelTester:
             n_embd=self.hidden_size,
             n_layer=self.num_hidden_layers,
             n_head=self.num_attention_heads,
-            intermediate_size=self.intermediate_size,
-            hidden_act=self.hidden_act,
-            hidden_dropout_prob=self.hidden_dropout_prob,
-            attention_probs_dropout_prob=self.attention_probs_dropout_prob,
+            n_inner=self.intermediate_size,
+            activation_function=self.hidden_act,
+            resid_pdrop=self.hidden_dropout_prob,
+            attn_pdrop=self.attention_probs_dropout_prob,
             n_positions=self.max_position_embeddings,
             n_ctx=self.max_position_embeddings,
             type_vocab_size=self.type_vocab_size,