[jdk11u-dev] RFR: 8287906: Rewrite of GitHub Actions (GHA) sanity tests [v4]

[George Adams]

> The final piece of the puzzle here, backports the GitHub actions rewrite. Also backported JDK-8288499 as it is required for this to be complete.
> 
> Clean other than the fact that JDK-8295714 was applied before so had to be rewritten and macOS-10.15 is now deprecated so had to switch to 11 (which had happened already in the old workflow layout.

George Adams has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:

 - Merge remote-tracking branch 'upstream/master' into actions
 - fixup build/test failures
 - remove GTEST code blocks
 - macOS bump to 11
 - Backport 3df72a359e402b929b210f88ed85a86f9f10231f
 - Backport bebb61224b163a70d79392e41ede4e61dbb04288
 - Backport 881ff368ceaff83ae78b1a17896c1ee45524bc84

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

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1554/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1554/files/201d839f..44199a4f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1554&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1554&range=02-03

  Stats: 1687 lines in 52 files changed: 1071 ins; 536 del; 80 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1554.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1554/head:pull/1554

PR: https://git.openjdk.org/jdk11u-dev/pull/1554