RFR: 2424: Enable copyright format check

[Zhao Song]

Enable copyright check for skara

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Commit messages:
 - SKARA-2424

Changes: https://git.openjdk.org/skara/pull/1703/files
  Webrev: https://webrevs.openjdk.org/?repo=skara&pr=1703&range=00
  Issue: https://bugs.openjdk.org/browse/SKARA-2424
  Stats: 8 lines in 1 file changed: 7 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/skara/pull/1703.diff
  Fetch: git fetch https://git.openjdk.org/skara.git pull/1703/head:pull/1703

PR: https://git.openjdk.org/skara/pull/1703