RFR: 8298921: Create a regression test for JDK-8139581 [v2]

[Srinivas Mandalika]

> Create a regression test for JDK-8139581
> 
> As described in JDK-8139581, when an AWT panel with AWT components, for example "java.awt.Button", is removed from AWT frame and added again to the same frame, then some AWT components contained in the panel are not drawn, however, clicking in the area of not drawn button leads to drawing of the button.
> 
> Test has a swing and awt component in a panel. It then removes and adds back the panel from/into the frame, to verify that they are repainted back properly.

Srinivas Mandalika has updated the pull request incrementally with one additional commit since the last revision:

  8298921: Fixed review comments, rethrow exception

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/11707/files
  - new: https://git.openjdk.org/jdk/pull/11707/files/e415709b..5ee77935

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11707&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11707&range=00-01

  Stats: 15 lines in 1 file changed: 1 ins; 6 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/11707.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11707/head:pull/11707

PR: https://git.openjdk.org/jdk/pull/11707