jenkins: Exclude maps04 from -sibling test

This guy runs on tmpfs for dumps and maps04 is too heavy for it
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/jenkins/criu-sibling.sh

@@ -3,4 +3,4 @@ set -e
 source `dirname $0`/criu-lib.sh
 prep
 mount_tmpfs_to_dump
-./test/zdtm.py run --all --report report --sibling --parallel 4 || fail
+./test/zdtm.py run --all --report report --sibling --parallel 4 -x 'maps04' || fail