[8u] RFR: 8031085: DateTimeFormatter won't parse dates with custom format "yyyyMMddHHmmssSSS"

[Guo Ge]

Hi,

I would like to request a review for backport of JDK-8031085.

Original bug: https://bugs.openjdk.java.net/browse/JDK-8031085
webrev for 8u: http://cr.openjdk.java.net/~gguo/8031085-8u/webrev.00

The fix is imperative in product, the original fix is not clean due to 
context change, performed jtreg jdk/test/java/time on Linux/x86-64.

Thanks,
Guo Ge