RFR: 8303264: Refactor nsk/stress/strace to extract shared and remove redundant code

[Leonid Mesnik]

Some old nsk code is removed, and logging is moved to the based class. 
No functional changes.

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Commit messages:
 - 8303264: Refactor nsk/stress/strace to extract shared and remove redundant code

Changes: https://git.openjdk.org/jdk/pull/12777/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12777&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8303264
  Stats: 598 lines in 16 files changed: 14 ins; 507 del; 77 mod
  Patch: https://git.openjdk.org/jdk/pull/12777.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12777/head:pull/12777

PR: https://git.openjdk.org/jdk/pull/12777