RFR: 8290557: tools/jpackage/share/AddLauncherTest.java#id1 failed with "ERROR: Failed: Check icon file"

[Alexey Semenyuk]

8290557: tools/jpackage/share/AddLauncherTest.java#id1 failed with "ERROR: Failed: Check icon file"

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Commit messages:
 - 8290557: tools/jpackage/share/AddLauncherTest.java#id1 failed with "ERROR: Failed: Check icon file"

Changes: https://git.openjdk.org/jdk/pull/9618/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9618&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8290557
  Stats: 52 lines in 1 file changed: 45 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/9618.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9618/head:pull/9618

PR: https://git.openjdk.org/jdk/pull/9618