git: openjdk/loom: fibers: JFR failure problemlisted.

[duke]

Changeset: 2ef7253b
Author:    lmesnik <leonid.mesnik at oracle.com>
Date:      2021-02-08 17:17:28 +0000
URL:       https://git.openjdk.java.net/loom/commit/2ef7253b

JFR failure problemlisted.

! test/hotspot/jtreg/ProblemList.txt
! test/jdk/ProblemList-vthread.txt