join-ns: add join-ns zdtm test
join-ns: add join-ns zdtm test

Signed-off-by: Deng Guangxing <19218f58df7492b76278d72fee211ae249078a47@huawei.com>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@virtuozzo.com>

efiop/criu,eabatalov/criu,KKoukiou/criu-remote,efiop/criu,eabatalov/criu,eabatalov/criu,efiop/criu,efiop/criu,eabatalov/criu,efiop/criu,KKoukiou/criu-remote,KKoukiou/criu-remote,KKoukiou/criu-remote,eabatalov/criu,KKoukiou/criu-remote,efiop/criu,KKoukiou/criu-remote,eabatalov/criu