sctp: reduce the number of clients and mbytes (VPP-1396)

Reducing the number of clients and mbytes transferred to make the test a
functional test rather than a stress one.

Change-Id: I715ab5db087b96c40da37d4221f3030b10519fd0
Signed-off-by: Marco Varlese <marco.varlese@suse.com>
(cherry picked from commit 038d2614bf)

test/test_sctp.py

@@ -68,7 +68,7 @@ class TestSCTP(VppTestCase):
             self.logger.critical(error)
             self.assertEqual(error.find("failed"), -1)
 
-        error = self.vapi.cli("test echo client nclients 2 mbytes 100" +
+        error = self.vapi.cli("test echo client mbytes 10" +
                               " appns 1" +
                               " fifo-size 4" +
                               " no-output test-bytes syn-timeout 3" +