Mount java certs to Gerrit container

Mount host java certs to Gerrit container to allow HTTPS/SSL connections
to LDAP which was switched to SSL/TLS.

Change-Id: I4ad2c9199229b8a7c7b4bee7cf0804bd6c374852
Related-Prod: PROD-23454
diff --git a/docker/swarm/stack/gerrit.yml b/docker/swarm/stack/gerrit.yml
index c164d75..14325a5 100644
--- a/docker/swarm/stack/gerrit.yml
+++ b/docker/swarm/stack/gerrit.yml
@@ -27,6 +27,7 @@
                 - ${_param:gerrit_ssh_publish_port}:29418
               volumes:
                 - /srv/volumes/gerrit:/var/gerrit/review_site
+                - /etc/ssl/certs/java/cacerts:/etc/ssl/certs/java/cacerts:ro
               depends_on:
                 - db
               environment: