RFR(S): 8223396: [TESTBUG] several jfr tests do not clean up files created in /tmp

[mikhailo.seledtsov at oracle.com]

David, Erik, Harold, Leonid,

Thank you for reviews,

Misha

On 5/31/19 1:47 PM, mikhailo.seledtsov at oracle.com wrote:
> Please review this change that converts all uses of 
> Files.createTempFile/createTempDirecotry in JFR tests to
> use corresponding test library Utils methods. Using test.lib.Utils for 
> this purpose is a recommended practice
> for JDK tests.
>
> I have also create a new method in jdk.test.lib.Utils: 
> createTempDirectory()
>
>     JBS: https://bugs.openjdk.java.net/browse/JDK-8223396
>     Webrev: http://cr.openjdk.java.net/~mseledtsov/8223396.00/
>     Testing:
>         1. Locally: ran the affected tests (Mac) - All PASS
>         2. test cluster: running jdk_jfr and tier1 - in Progress
>
> Note: to be safe, I will not integrate this until Monday morning.
>
>
> Thank you,
> Misha
>