jenkins: lazy-pages: reduce amount of parallel runs for --remote case

Running zdtm/static/maps04 with --remote-lazy-pages in parallel with 3
other tests takes too much time on the Jenkins builder. Let's try running
with --parallel 2.
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

test/jenkins/criu-lazy-pages.sh

@@ -18,7 +18,7 @@ fi
 	       --lazy-pages $LAZY_EXCLUDE || fail
 
 # lazy restore from "remote" dump
-./test/zdtm.py run --all --keep-going --report report --parallel 4 \
+./test/zdtm.py run --all --keep-going --report report --parallel 2 \
 	       --remote-lazy-pages $LAZY_EXCLUDE || fail
 
 # During pre-dump + lazy-pages we leave VM_NOHUGEPAGE set