[15] RFR: 8242614: cleanup duplicated test ldap server in some com/sun/jndi/ldap/ tests

[Chris Yin]

Hello

Please review following changes to cleanup duplicated test ldap server in some com/sun/jndi/ldap/ tests, thanks

Bug: https://bugs.openjdk.java.net/browse/JDK-8242614
Webrev: http://cr.openjdk.java.net/~xyin/8242614/webrev.00/

This is the first part to cleanup straightforward duplicated test ldap server which was embedded in test itself. In the past, ldap tests may copy or implemented a dummy server in test itself to support specific test logic, so we have many duplicated dummy server logic across tests. Now there is already a common test ldap server skeleton available, it’s time to cleanup those duplicated logic to reduce possible future maintenance works. Run modified tests on 4 platforms for total 200 times, all green.

Thanks,
Chris