test: don't ignore errors other other tests

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/Makefile

@@ -16,7 +16,7 @@ TESTS = unix-callback mem-snap rpc libcriu mounts/ext security pipes crit
 
 other: .FORCE
 	for t in $(TESTS); do			\
-		$(MAKE) -C $$t run || break;	\
+		$(MAKE) -C $$t run || exit 1;	\
 	done					\
 
 zdtm-tst-list: zdtm.sh