Add SSL presets.

No need to use a separate profile as in X.509, everything we need is already
in ssl_config. Just load appropriate values.
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 800f6ac..8d3448c 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -20,7 +20,8 @@
 
     TEST_ASSERT( mbedtls_ssl_config_defaults( &conf,
                  MBEDTLS_SSL_IS_CLIENT,
-                 MBEDTLS_SSL_TRANSPORT_DATAGRAM ) == 0 );
+                 MBEDTLS_SSL_TRANSPORT_DATAGRAM,
+                 MBEDTLS_SSL_PRESET_DEFAULT ) == 0 );
     TEST_ASSERT( mbedtls_ssl_setup( &ssl, &conf ) == 0 );
 
     /* Read previous record numbers */