RFR: 8294520: Problemlist java/nio/file/Files/CopyProcFile.java

[Aleksey Shipilev]

Problemlist-ing this tier2 test due to [JDK-8294519](https://bugs.openjdk.org/browse/JDK-8294519).

Additional testing:
 - [x] Linux x86_64 fastdebug, test is now skipped

-------------

Commit messages:
 - Fix

Changes: https://git.openjdk.org/jdk/pull/10465/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10465&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294520
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/10465.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10465/head:pull/10465

PR: https://git.openjdk.org/jdk/pull/10465