[8u20] Request approval: JDK-8027175 Existing regression tests in tl/langtools and tl/jdk need to be updated for @bug keyword

[Sonali Goel]

Hello,

This is a request to backport the following test fix:

Bug: https://bugs.openjdk.java.net/browse/JDK-8027175
patch for langtools: 
http://hg.openjdk.java.net/jdk9/dev/langtools/rev/51568561f9b1
patch for jdk: http://hg.openjdk.java.net/jdk9/dev/jdk/rev/b381b2173ce4
applies cleanly for langtools: 
http://hg.openjdk.java.net/jdk8u/jdk8u-dev/langtools
applies cleanly for jdk: http://hg.openjdk.java.net/jdk8u/jdk8u-dev/jdk

Thanks,
Sonali