Add tests for (named) bitstring to suite_asn1write
diff --git a/tests/data_files/server5.req.ku.sha1 b/tests/data_files/server5.req.ku.sha1
index 7556d1a..6f3b7aa 100644
--- a/tests/data_files/server5.req.ku.sha1
+++ b/tests/data_files/server5.req.ku.sha1
@@ -1,8 +1,8 @@
-----BEGIN CERTIFICATE REQUEST-----
-MIIBFjCBvAIBADA8MQswCQYDVQQGEwJOTDERMA8GA1UEChMIUG9sYXJTU0wxGjAY
+MIIBFzCBvAIBADA8MQswCQYDVQQGEwJOTDERMA8GA1UEChMIUG9sYXJTU0wxGjAY
BgNVBAMTEVBvbGFyU1NMIFNlcnZlciAxMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcD
QgAEN8xW2XYJHlpyPsdZLf8gbu58+QaRdNCtFLX3aCJZYpJO5QDYIxH/6i/SNF1d
Fr2KiMJrdw1VzYoqDvoByLTt/6AeMBwGCSqGSIb3DQEJDjEPMA0wCwYDVR0PBAQD
-AgHAMAsGByqGSM49BAEFAANIADBFAiBjnnD7nwsFnCL+MpPPFJE3K/Tgj+5rAgXj
-e5UejDX2CAIhAKdbigWJL/ZatvG9CFHq7ykrRns2x8JEXehWu8DsXdx9
+AgbAMAsGByqGSM49BAEFAANJADBGAiEAmhkNVnF6mGzzyHxGMMuUM2tYw5/y5tlF
+3424Bs7DbG8CIQCJteTtpZ8RJ7PjpxcmVpP4fcYHFTR50zoc9jOV0AYPLQ==
-----END CERTIFICATE REQUEST-----