[jdk11u-dev] RFR: 8340185: Use make -k on GHA to catch more build errors

[Aleksey Shipilev]

Improves GHA usability.

Additional testing:
 - [ ] GHA

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Commit messages:
 - Backport e1a4a6beb61c70228c3aa54ddf2d9310fd5020e2

Changes: https://git.openjdk.org/jdk11u-dev/pull/3068/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3068&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340185
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/3068.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/3068/head:pull/3068

PR: https://git.openjdk.org/jdk11u-dev/pull/3068