[jdk17u-dev] RFR: 8333698: [17u] TestJstatdRmiPort fails after JDK-8333667

[Aleksey Shipilev]

Recent regression after [JDK-8233725](https://bugs.openjdk.org/browse/JDK-8233725) backport. The real fix is backporting [JDK-8272317](https://bugs.openjdk.org/browse/JDK-8272317), but it would take a while. Meanwhile, we can unbreak 17u-dev testing by rewriting the asserts a bit here.

Additional testing:
 - [x] MacOS AArch64 fastdebug, `sun/tools/jstatd` used to fail, now fully pass

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

Commit messages:
 - Fix

Changes: https://git.openjdk.org/jdk17u-dev/pull/2543/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2543&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8333698
  Stats: 5 lines in 1 file changed: 3 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2543.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2543/head:pull/2543

PR: https://git.openjdk.org/jdk17u-dev/pull/2543