RFR: JDK-8266129: tools/jpackage/windows/WinInstallerIconTest.java hangs with fastdebug

[Andy Herrick]

JDK-8266129: tools/jpackage/windows/WinInstallerIconTest.java hangs with fastdebug

just disabling this test when vm.debug

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Commit messages:
 - JDK-8266129: tools/jpackage/windows/WinInstallerIconTest.java hangs with fastdebug

Changes: https://git.openjdk.java.net/jdk/pull/3827/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3827&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8266129
  Stats: 7 lines in 1 file changed: 7 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3827.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3827/head:pull/3827

PR: https://git.openjdk.java.net/jdk/pull/3827