RFR: 8307297: Move some DnD tests to open [v5]

[Alisen Chung]

> Adding some DnD tests

Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:

  fixing timeouts

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/13756/files
  - new: https://git.openjdk.org/jdk/pull/13756/files/e1e0bc4d..1292a6a5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13756&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13756&range=03-04

  Stats: 11 lines in 2 files changed: 4 ins; 3 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/13756.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13756/head:pull/13756

PR: https://git.openjdk.org/jdk/pull/13756