Fix for the example repose sp.

Made it compatible with the API change:
create_*_request method returns a tuple (request_id, request)

Author: Hans Hörberg

.gitignore

@@ -169,3 +169,7 @@ example/sp-repoze/sp.xml
 example/sp-repoze/sp_conf.py
 
 example/sp-repoze/sp_conf.py
+
+example/idp2/sp_test.xml
+
+example/sp-repoze/idp_test.xml

src/s2repoze/plugins/sp.py

@@ -383,9 +383,10 @@ def challenge(self, environ, _status, _app_headers, _forget_headers):
 
                 if _cli.authn_requests_signed:
                     _sid = saml2.s_utils.sid(_cli.seed)
-                    msg_id = msg_str = _cli.create_authn_request(
+                    req_id, msg_str = _cli.create_authn_request(
                         dest, vorg=vorg_name, sign=_cli.authn_requests_signed,
                         message_id=_sid, extensions=extensions)
+                    req_id = _sid
                 else:
                     req_id, req = _cli.create_authn_request(
                         dest, vorg=vorg_name, sign=False, extensions=extensions)