[8u] RFR: 8231254: (fs) Add test for macOS Catalina changes to protect system software

[Alex Kashchenko]

Hi,

Please review the parity backport of JDK-8231254:

Bug: https://bugs.openjdk.java.net/browse/JDK-8231254

Original commit: https://hg.openjdk.java.net/jdk/jdk/rev/1e57d3774190

8 webrev: https://cr.openjdk.java.net/~akasko/jdk8u/8231254/webrev.00/

8u changes: removed "jdk" prefix from file path, Path.of() replaced
with Paths.get().

This backport only adds a new test, I've checked that it can be run on
Mac and intend to follow up with JDK-8232178 backport.

-- 
-Alex