RFR 8178795: krb5 Basic.java test should be basic

[Weijun Wang]

Please take a review at

    http://cr.openjdk.java.net/~weijun/8178795/webrev.00/

Basic.java was reverted to what it was 5 years ago and an extra test 
ModuleName.java is created to cover what Basic.java does now, but 
simplified because it does not need any real communication between 
client/server/backend.

After this change Basic.java becomes basic again so it's easy to create 
new tests based on it.

Thanks
Max