[12] RFR: 8206120: Add test cases for lenient Japanese era parsing

[Naoto Sato]

Hello,

Please review the changes to the following issue:

https://bugs.openjdk.java.net/browse/JDK-8206120

The proposed changeset is located at:

http://cr.openjdk.java.net/~naoto/8206120/webrev.00/

This is a test case only fix to ensure the new Japanese era 
implementation introduced with JDK-8202088 accepts lenient era/year, 
such as "Heisei 32."

Naoto