jenkins: Move pre-dump test on .py launcher

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/jenkins/criu-pre-dump.sh

-# Check pre-dump
-
-source `dirname $0`/criu-lib.sh &&
-prep &&
-mkdir -p test/dump &&
-mount -t tmpfs dump test/dump &&
-make -C test -j 4 'ZDTM_ARGS=-P -i 3 -C' zdtm &&
-make -C test -j 4 'ZDTM_ARGS=-p -P -i 3 -C' zdtm && # + page server
-true || fail
+# Check 3 pre-dump-s before dump (with and w/o page server)
+set -e
+source `dirname $0`/criu-lib.sh
+prep
+mount_tmpfs_to_dump
+./test/zdtm.py run --all --report report --parallel 4 --pre 3 -x 'maps04' || fail
+./test/zdtm.py run --all --report report --parallel 4 --pre 3 --page-server -x 'maps04' || fail