Review request for CR 8049039 Need new tests for sun.securiy.x509 classes

[raghu k.nair]

Hello,
 Please review the tests for sun.security.x509 classes.
 These cover tests for GeneralName, GeneralNames, GeneralSubtree, 
GeneralSubtrees, IPAddressName and IssuerAlternativeNameExtension.

webrev:
http://cr.openjdk.java.net/~rhalade/8049039/webrev.00/

Bug:
https://bugs.openjdk.java.net/browse/JDK-8049039

Thanks,
Raghu Nair