jenkins: exclude maps04 from the criu-iter job

This job does three iterations. We need to write about 0.5Gb of images
for maps04.  This is too much for our test VM and other tests start fail
due to timeout.

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