Set sun.jnu.encoding to UTF-8 by default

Summary

sun.jnu.encoding is not explicitly defined in the startup of the FishEye JVM, and so it's possible for this to be set to an unexpected value in a customer's environment which causes issues with extended UTF-8 characters, e.g. working with Chinese text in a file

Steps to Reproduce

1. Have your environment set up with sun.jnu.encoding as GBK by default
2. Create a file containing special characters

Expected Results

Even if your JVM is configured like that by default, FishEye server should force it to be UTF-8.

Actual Results

Chinese text does not appear correctly in FishEye/Crucible.

Workaround

Set sun.jnu.encoding explicitly to UTF-8 in the $FISHEYE_OPTS Environment variables:

-Dsun.jnu.encoding=UTF-8