OAK-6130: Update Oak trunk to Jackrabbit 2.15.2
OAK-6130: Update Oak trunk to Jackrabbit 2.15.2

git-svn-id: 67138be12999c61558c3dd34328380c8e4523e73@1794001 13f79535-47bb-0310-9956-ffa450edef68

mduerig/jackrabbit-oak,mduerig/jackrabbit-oak,mduerig/jackrabbit-oak,mduerig/jackrabbit-oak,mduerig/jackrabbit-oak