RFR: 8326611: Clean up vmTestbase/nsk/stress/stack tests [v3]

[Leonid Mesnik]

> The vmTestbase/nsk/stress/stack might be slightly refactored to improve reading. Mostly, simple refactoring.
> Test logic was not changed, except removing verbose mode and enabling printing.

Leonid Mesnik has updated the pull request incrementally with two additional commits since the last revision:

 - Merge branch '8326611' of https://github.com/lmesnik/jdk into 8326611
 - moved tests into runtime.

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/17993/files
  - new: https://git.openjdk.org/jdk/pull/17993/files/46ce4fbd..4c2ecb45

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17993&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17993&range=01-02

  Stats: 984 lines in 23 files changed: 406 ins; 508 del; 70 mod
  Patch: https://git.openjdk.org/jdk/pull/17993.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17993/head:pull/17993

PR: https://git.openjdk.org/jdk/pull/17993