RFR:JDK-8168906-Tighten permissions granted to the jdk.localedata module

[Rachna Goel]

Hi,

Kindly review fix for JDK-8168906. 
https://bugs.openjdk.java.net/browse/JDK-8168906

Patch :http://cr.openjdk.java.net/~rgoel/JDK-8168906/webrev/

fix: As jdk.localedata module does read any system properties, tightened 
permissions for same.

Thanks,
Rachna