RFR: 8344270: Update tier1_common and hotspot_misc groups to better organize hotspot non-component tests

[Leonid Mesnik]

Can you please review following PR that improve test groups.
The bug was originally filed  to eliminate duplication between tier1_common and hotspot_misc test groups.  However while looked on the test content of these groups I realized that there are some other issues. 
1) hotspot_resourcehogs groups should be executed always separately from other tests to don't cause intermittent failures.
2) it makes sense to run all gtest tests in tier1 but don't run in any other tiers (with any VM flags) 
3) testlibrary_tests and  sources should be a separate groups that don't need to be executed with any VM flags, or event with all builds 

So tier1_common includes non-component tests that should be executed in tier1. 
**all** sanity tests
**all** gttest tests (were not all of them)
testlibrary_tests (might be os/cpu specifc, so need to run them with all builds)
source code checking tests (no need to run them an all builds, but it takes only few seconds)

And it doesn't makes any sense to execute  tier1_common with any external VM flags.

While hotspot_misc now includes on 2 sanity tests.  It doesn't looks useful, but main purpose for this group would be to catch all tests that somehow missed from other groups. So let keep it. 

The new test groups were added mostly to add comments explaining their specific.

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Commit messages:
 - fixed comment
 - changed groups

Changes: https://git.openjdk.org/jdk/pull/25070/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25070&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344270
  Stats: 31 lines in 1 file changed: 21 ins; 4 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/25070.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25070/head:pull/25070

PR: https://git.openjdk.org/jdk/pull/25070