RFR: 8323519: Add applications/ctw/modules to Hotspot tiered testing

[Aleksey Shipilev]

Noticed that `applications/ctw/modules` is missing from current `tier{1,2,3,4}` hotspot definitions, since tier4 specifically excludes all applications. That exclusion was due to potentially unprepared dependencies that are needed for testing: for example jcstress tests would fail with the default configuration. But CTW for JDK modules works well out of the box, so we can add it somewhere in high tier, for example tier3. 

These tests take quite a bit of time, so I opted to add them to relevant "slow" group that is run in tier3.

Additional testing:
 - [x] Checked that `tier3_compiler` runs CTW tests

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Commit messages:
 - Fix

Changes: https://git.openjdk.org/jdk/pull/17348/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17348&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323519
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/17348.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17348/head:pull/17348

PR: https://git.openjdk.org/jdk/pull/17348