Provide a way to set the connect and read timeout for ldap connections.

It is possible to set the ldap connection pool timeout by using a system property, but it is not possible to set the connect and read timeout on the ldap connection.

The connect and read timeouts need to be passed into the JVMs LDAP code as part of the properties or hashtable ("com.sun.jndi.ldap.connect.timeout" and "com.sun.jndi.ldap.read.timeout").