[jdk11u-dev] RFR: 8304353: Add lib-test tier1 testing in GHA

[Aleksey Shipilev]

Clean backport to improve 11u GHA coverage.

Additional testing:
 - [ ] GHA

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Commit messages:
 - Backport 57276101df79f07b14b914b36b1155cedec3eb3d

Changes: https://git.openjdk.org/jdk11u-dev/pull/2104/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2104&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8304353
  Stats: 5 lines in 1 file changed: 5 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2104.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2104/head:pull/2104

PR: https://git.openjdk.org/jdk11u-dev/pull/2104