[8u-dev] Request for approval: 8039132: cleanup @ignore JAAS/krb5 tests

[Wang Weijun]

Hi All 

This is a request to backport a jdk9 fix into jdk8u-dev. 

   8039132: cleanup @ignore JAAS/krb5 tests

This bug is about liberating some closed tests which used to depend on internal servers but can be rewritten to be independent now.

The fix is already included in jdk9 as: 

   http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/37d001f0091a

The patch for jdk8u-dev is identical to the one in jdk9.

Thanks 
Weijun