RFR: 8290400: Must run exe installers in jpackage jtreg tests without UI

[Alexey Semenyuk]

8290400: Must run exe installers in jpackage jtreg tests without UI

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Commit messages:
 - 8290400: Must run exe installers in jpackage jtreg tests without UI

Changes: https://git.openjdk.org/jdk/pull/9531/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9531&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8290400
  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9531.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9531/head:pull/9531

PR: https://git.openjdk.org/jdk/pull/9531