RFR: JDK-8224130: create additional automated tests for create-app-image

[Alexey Semenyuk]

http://cr.openjdk.java.net/~herrick/8224130/webrev.01/test/jdk/tools/jpackage/helpers/JPackageHelper.java.sdiff.html:
---
  try (PrintWriter out = new PrintWriter(new BufferedWriter(
  520                     new FileWriter("argfile.cmds")))) {
  521                 out.println(fileString);
  522             }
---
I suggest to use Files.newBufferedWriter() call instead of new 
BufferedWriter(new FileWriter...)).

-Alexey

On 6/5/2019 8:07 PM, Andy Herrick wrote:
> Please review the jpackage fix for bug [1] at [2].
>
> This is a fix for the JDK-8200758-branch branch of the open sandbox 
> repository (jpackage).
>
> [1] https://bugs.openjdk.java.net/browse/JDK-8224130
> [2] http://cr.openjdk.java.net/~herrick/8224130/
>
> /Andy
>