RFR: 8311990: Two JDI tests may interfere with each other [v2]

[Alex Menkov]

> "Attach fails" scenarios (debuggee starts listening and debugger is expected to fail trying to attach) sometimes interfere with other JDI tests (so JdwpNetProps.java test or other JDI test or both fail).
> The fix disables the scenarios to remove noise in the CI.

Alex Menkov has updated the pull request incrementally with one additional commit since the last revision:

  add sys.prop to enable negative testing

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20362/files
  - new: https://git.openjdk.org/jdk/pull/20362/files/737b0869..0378fc48

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20362&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20362&range=00-01

  Stats: 5 lines in 2 files changed: 2 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/20362.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20362/head:pull/20362

PR: https://git.openjdk.org/jdk/pull/20362