Integrated: 8252954: Lanai : java/awt/datatransfer/DataFlavor/DataFlavorRemoteTest.java fails

[Jayathirth D V]

We are printing additional logs in stderr and it is causing some tests to fail.
Made similar change as it is done for other fprintf cases by adding debug macro.

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Commit messages:
 - 8252954: Lanai : java/awt/datatransfer/DataFlavor/DataFlavorRemoteTest.java fails

Changes: https://git.openjdk.java.net/lanai/pull/128/files
 Webrev: https://webrevs.openjdk.java.net/?repo=lanai&pr=128&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8252954
  Stats: 7 lines in 2 files changed: 6 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/lanai/pull/128.diff
  Fetch: git fetch https://git.openjdk.java.net/lanai pull/128/head:pull/128

PR: https://git.openjdk.java.net/lanai/pull/128