Allow 302 status for Twitter integration test (#400)

Author: DunyaKokoschka

test/mint/http2/integration_test.exs

@@ -183,7 +183,9 @@ defmodule HTTP2.IntegrationTest do
 
       assert {:ok, %HTTP2{} = conn, responses} = receive_stream(conn)
 
-      assert [{:status, ^ref, 200}, {:headers, ^ref, headers} | rest] = responses
+      assert [{:status, ^ref, status}, {:headers, ^ref, headers} | rest] = responses
+      assert status in [200, 302]
+
       assert {_, [{:done, ^ref}]} = Enum.split_while(rest, &match?({:data, ^ref, _}, &1))
 
       assert is_list(headers)