zdtm: execute sigpending and sk-netlink only on linux-cr

The functionality for dumping signals and netlink sockets are not merged
in the upstream kernel yet.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.sh

@@ -126,6 +126,8 @@ transition/ipc
 "
 
 TEST_CR_KERNEL="
+static/sigpending
+static/sk-netlink
 "
 
 CRTOOLS=$(readlink -f `dirname $0`/../crtools)