ipalib.x809: Accept bytes for make_pem

Part of the work for https://fedorahosted.org/freeipa/ticket/5638

Reviewed-By: Jan Cholasta <jcholast@redhat.com>

ipalib/x509.py

@@ -272,6 +272,8 @@ def make_pem(data):
     Convert a raw base64-encoded blob into something that looks like a PE
     file with lines split to 64 characters and proper headers.
     """
+    if isinstance(data, bytes):
+        data = data.decode('ascii')
     pemcert = '\r\n'.join([data[x:x+64] for x in range(0, len(data), 64)])
     return '-----BEGIN CERTIFICATE-----\n' + \
     pemcert + \