tests: Set print_category values explicitly

This will alow easily changing default values for print_category vs
print_category_hex later.

In any case, every test relying on logging output validation should
always explicitly state the config to avoid issues in the future if
default values change.

Related: OS#5034
Change-Id: If29b40557d5c2bcda04b964f344070bad58d8f28
diff --git a/tests/socket/socket_sctp_test.c b/tests/socket/socket_sctp_test.c
index e70b8be..9705038 100644
--- a/tests/socket/socket_sctp_test.c
+++ b/tests/socket/socket_sctp_test.c
@@ -223,6 +223,8 @@
 	osmo_init_logging2(ctx, &info);
 	log_set_use_color(osmo_stderr_target, 0);
 	log_set_print_filename(osmo_stderr_target, 0);
+	log_set_print_category(osmo_stderr_target, 0);
+	log_set_print_category_hex(osmo_stderr_target, 0);
 #ifdef HAVE_LIBSCTP
 	test_sockinit2_multiaddr_simple();
 	test_sockinit2_multiaddr_several();