RFR: 8345700: tier{1,2,3}_compiler doesn't cover all compiler tests

[Leonid Mesnik]

Hi, 
could you please review following fix that update
tier3_compiler test group
so :hotspot_compiler is always a sum of
tier1_compiler, tier2_compiler, tier3_compiler
This is natural splitting of tests into 3 layers. 
The fix is done to execution :hotspot_compiler into 3 tiers with corresponding group names.

The new group
` tier2_ctw`
was introduced for ctw testing. 
It is different from tests in hotspot_compiler, and usually executed separately, So I added it as separate sub-test of tier2.

I moved id from tier3 to tier2 to correspond current tiers of Hotspot CI in our system. 
If anyone thinks it should be part of tier3 - we can discuss in PR comments how do deal with it.

@shipilev, could you please take a look and check if these changes are ok to you since you the author of tier2/tier3.

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Commit messages:
 - 8345700: tier{1,2,3}_compiler doesn't cover all compiler tests

Changes: https://git.openjdk.org/jdk/pull/22614/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22614&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345700
  Stats: 16 lines in 1 file changed: 4 ins; 11 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22614.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22614/head:pull/22614

PR: https://git.openjdk.org/jdk/pull/22614