OAK-1410 Allow automatic propagation of oak-whiteboard when adding security manager

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1566887 13f79535-47bb-0310-9956-ffa450edef68
OAK-516 Create LdapLoginModule based on ExternalLoginModule

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1566888 13f79535-47bb-0310-9956-ffa450edef68