OAK-1641: Mongo: Un-/CheckedExecutionException on replica-primary crash

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1609222 13f79535-47bb-0310-9956-ffa450edef68
OAK-1708: extend DocumentNodeStoreService to support RDBPersistence

Do not print stack trace on System.err

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1609223 13f79535-47bb-0310-9956-ffa450edef68