RFR: 8371709: Add CTW to hotspot_compiler testing

[Aleksey Shipilev]

CTW tests are for compiler testing, so it makes sense to run them as part of hotspot_compiler group. There are no external dependencies for CTW that processes JDK-s own modules, so we can add that.

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Commit messages:
 - Fix

Changes: https://git.openjdk.org/jdk/pull/28268/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28268&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8371709
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28268.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28268/head:pull/28268

PR: https://git.openjdk.org/jdk/pull/28268