RFR: 8285878: [TestBug] LocalStorageTest does not cleanup post execution

[Jay Bhaskar]

Issue: test Bug LocalStorageTest does not cleanup post execution
Solution: Path for LocalStorageDir changed to modules/javafx.web/build/. Now the LocalStorageDir is deleted after post execution.

-------------

Commit messages:
 - 8285878: [TestBug] LocalStorageTest does not cleanup post execution

Changes: https://git.openjdk.org/jfx/pull/869/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=869&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8285878
  Stats: 26 lines in 2 files changed: 0 ins; 25 del; 1 mod
  Patch: https://git.openjdk.org/jfx/pull/869.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/869/head:pull/869

PR: https://git.openjdk.org/jfx/pull/869