RFR: JDK-8165798 Fix license and copyright headers under test/java/awt

[Ken Chen]

**

*Hello,*
*

Please review the patch below which fixes copyright in test files for awt


Bug:<https://bugs.openjdk.java.net/browse/JDK-8163991>https://bugs.openjdk.java.net/browse/JDK-8165798

Webrev: http://cr.openjdk.java.net/~shurailine/8165798/webrev.00/ 
<http://cr.openjdk.java.net/%7Eshurailine/8165798/webrev.00/>


Thanks,

-Ken*