Add tests for (named) bitstring to suite_asn1write
diff --git a/tests/data_files/server1.req.ku-ct b/tests/data_files/server1.req.ku-ct
index 0e057d5..4a0eab8 100644
--- a/tests/data_files/server1.req.ku-ct
+++ b/tests/data_files/server1.req.ku-ct
@@ -7,11 +7,11 @@
 W+cTl4W1I5LZ1CQG1QkliXUH3aYajz8JGb6tZSxk65Wb3P5BXhem2mxbacwCuhQs
 FiScStzN0PdSZ3PxLaAj/X70McotcMqJCwTbLqZPcG6ezr1YieJTWZ5uWpJl4og/
 DJQZo93l6J2VE+0p26twEtxaymsXq1KCVLECAwEAAaAxMC8GCSqGSIb3DQEJDjEi
-MCAwCwYDVR0PBAQDAgHgMBEGCWCGSAGG+EIBAQQEAwIAQDANBgkqhkiG9w0BAQUF
-AAOCAQEANlNG9hW852OzVKj2Z8TtU9jxstAoSCH9yc9Coj4Vw2TTjs1zcuBWsMl1
-2bf2I6ZvEH6ZhcQY7i7nyHQyPlqE4l6U9D8ct967QN7smuAHNY2HiQ2++eCBTHck
-PdtGJAzIvNlXcoqNi8UC5fGepNtI1usNo41SKMvbg6nGA5gdcQKk7CVlk8lrD0qI
-Xn/HvjSRoDE4ZGxAtNvPXWorGSxtgcy8EMPoXVUab5fNt8q//x/NQ4yEQKPrexmR
-IuOiQ8VW8QZtkORGpZbGSvskU0WfKANui4zCcXYRc4mVR4Wf0C+fyHeihhjslSnT
-RbC7nQn5HSHp31qJlr80QodywaK1Dg==
+MCAwCwYDVR0PBAQDAgXgMBEGCWCGSAGG+EIBAQQEAwIGQDANBgkqhkiG9w0BAQUF
+AAOCAQEAKIF06WMMbkfDi6z3FzG0OVqGVgCIdQjJUK2S8VrVXJ74goM8SD7jp2RC
+2d5nszk0do3ruAqaI3YOk5U9HQR0qHMSXEcAeB/qqIYWXrlZKacdzSk6vd88VC01
+uAWBSE2IQ4TWPSiWLCN54VtO8AXuF5wJgjGOh4yixVqKzcQh5b+mJs3e7cgMsC5a
+3iPt0EemCT+irT4cXtcJe9/DAvnvvvCZ5UCcvc3shBIA5pBsOOmd1yCYCbxrq3aL
+PhFf/vbbf9eORMwWsqOWopnRgBkPpVnTu9G27t/Nyjencjfk8NEaM9q8YnF0x5lD
+elCFyt+HGwoCeOBN9odfQmKQpW+eGg==
 -----END CERTIFICATE REQUEST-----