hg: jdk/jdk: 8210695: Create test to cover JDK-8205330 InitialDirContext ctor sometimes throws NPE if the server has sent a disconnection

[sha.jiang at oracle.com]

Changeset: caac55d48dc3
Author:    xyin
Date:      2018-09-17 13:49 +0800
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/caac55d48dc3

8210695: Create test to cover JDK-8205330 InitialDirContext ctor sometimes throws NPE if the server has sent a disconnection
Reviewed-by: vtewari, dfuchs, chegar

+ test/jdk/com/sun/jndi/ldap/DisconnectNPETest.java