zdtm: exit a test if the "root" process died
zdtm: exit a test if the "root" process died

Each test has a process which controls other processes and
if it dies the other processes have to be killed.

travis-ci: success for zdtm: exit a test if the "root" process died
Signed-off-by: Andrei Vagin <74c05afa918858348d6db8037d82fa8124870113@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@virtuozzo.com>

eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu