sccp: Modify SCCP_tests to be run against sccp_demo_user in srv mode

It's easier to handle several tests if they are the ones connecting to
the program under tests.
Forthcoming SCCP_Tests_RAW require use of this mode too.

Take the chance to tweak other values which were wrong, in order to have
CR answered correctly with a CC later on.

Related: OS#4343
Change-Id: Ibf99b1546411b9a9b4375b82f1003d93d3c1645d
diff --git a/sccp/SCCP_Tests.ttcn b/sccp/SCCP_Tests.ttcn
index e76e9ac..835c934 100644
--- a/sccp/SCCP_Tests.ttcn
+++ b/sccp/SCCP_Tests.ttcn
@@ -2,6 +2,9 @@
  * Author: Stefan Sperling <ssperling@sysmocom.de>
  * All Rights Reserved
  *
+ * The idea is that these tests are executed against sccp_demo_user from
+ * libosmo-sccp.git in server mode.
+ *
  * Released under the terms of GNU General Public License, Version 2 or
  * (at your option) any later version.
  *