JLM tests with security enabled fail on Windows

JLM tests with security enabled fail on Windows with :

```
Successfully processed 1 files; Failed processing 0 files
ERROR: File ownership cannot be applied on insecure file systems;
there is no support for ACLs.
**FAILED** at step 2 (Re-assign ownership for jmxremote.password file). Expected return value=0 Actual=256 at T://setUp.pl line 73.
STF 19:34:42.184 - **FAILED** setup script failed. Expected return value=0 Actual=1

```

https://ci.adoptopenjdk.net/view/Test_grinder/job/Grinder/475/tapResults/

Start with the linked JLM security-enabled Windows run and the failing setup step at T://setUp.pl line 73. Reproduce the failure and trace why ownership and ACL setup returns 256; done means the setup succeeds and the JLM tests pass on Windows.

Written by the indexing model from the issue text.