RFR: 8306067: Open source AWT Graphics, GridBagLayout related tests [v3]

[Prasanta Sadhukhan]

> This opensources few AWT Graphics & GridBagLayout tests

Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:

  space fix

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13570/files
  - new: https://git.openjdk.org/jdk/pull/13570/files/a54c1db9..8c4a1828

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13570&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13570&range=01-02

  Stats: 5 lines in 2 files changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/13570.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13570/head:pull/13570

PR: https://git.openjdk.org/jdk/pull/13570