Add optional support for tests running

Now my tests did not finish successfully even on local build. Not
enabling them by default.

strongswan-5.9.4-test-socket.patch

@@ -0,0 +1,31 @@
+From 377039d24648f82dac35dcf22a2b43de81f2fb96 Mon Sep 17 00:00:00 2001
+From: Petr Mensik <pemensik@redhat.com>
+Date: Thu, 11 Nov 2021 05:48:38 +0100
+Subject: [PATCH] Skip test case, which always hangs
+
+It just stops and does not continue. Avoid that test.
+---
+ src/libtls/tests/suites/test_socket.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/libtls/tests/suites/test_socket.c b/src/libtls/tests/suites/test_socket.c
+index 9e26e91..5296680 100644
+--- a/src/libtls/tests/suites/test_socket.c
++++ b/src/libtls/tests/suites/test_socket.c
+@@ -804,11 +804,13 @@ Suite *socket_suite_create()
+ 	add_tls_versions_test(test_tls_12_server, TLS_1_0, TLS_1_3);
+ 	suite_add_tcase(s, tc);
+ 
++#if 0
+ 	tc = tcase_create("TLS 1.3/key exchange groups");
+ 	tcase_add_checked_fixture(tc, setup_creds, teardown_creds);
+ 	tcase_add_loop_test(tc, test_tls13_ke_groups, 0,
+ 						tls_crypto_get_supported_groups(NULL));
+ 	suite_add_tcase(s, tc);
++#endif
+ 
+ 	tc = tcase_create("TLS 1.3/signature schemes");
+ 	tcase_add_checked_fixture(tc, setup_all_creds, teardown_creds);
+-- 
+2.31.1
+