OAK-2213 The unbound connection pool does not verify if the connection is still alive

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1632664 13f79535-47bb-0310-9956-ffa450edef68
OAK-2212 Add configuration options for ldap connection pools

- add configuration for maxActive pool size

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1632666 13f79535-47bb-0310-9956-ffa450edef68