<AWT Dev> RFR: 8252715: Problem list java/awt/event/KeyEvent/KeyTyped/CtrlASCII.java on Linux

[Phil Race]

Bug :https://bugs.openjdk.java.net/browse/JDK-8252715

We've opened a bug to track some xserver issues  running this test that cause all subsequent tests to fail
because they can't connect even though the server is still running.
Possibly it is a system configuration issue or perhaps an Xserver bug,
but it has been seen on more than one Ubuntu system running 19.10 and 20.04 and
I think we should problem list it to see if that cures/hides it  .. or moves it .. as this happens
so frequently we can't wait for an investigation to complete.

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Commit messages:
 - 8252715: Problem list java/awt/event/KeyEvent/KeyTyped/CtrlASCII.java on Linux

Changes: https://git.openjdk.java.net/jdk/pull/23/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=23&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8252715
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/23.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/23/head:pull/23

PR: https://git.openjdk.java.net/jdk/pull/23