RFR: JDK-8236518: There is no Native Packages WinUpgradeUUIDTest-2.0.exe after creating Native packages on win

[Andy Herrick]

Please review jpackage test fix to issue [1] at [2]

[1] - https://bugs.openjdk.java.net/browse/JDK-8236518

[2] - http://cr.openjdk.java.net/~herrick/8236518/webrev.01

/Andy