RFR: 8368625: com/sun/net/httpserver/ServerStopTerminationTest.java fails intermittently in tier7 [v2]

[Mikhail Yankelevich]

> I believe that increasing the timeout might help, as it seems to be happening due to the machine load. I'm going to make a pr increasing the timeout to 20 from 5 (similar to what it was when timeout factor was 4).

Mikhail Yankelevich has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - race condition fix
 - Merge branch 'master' into JDK-8368625
 - race condition fix
 - JDK-8368625: com/sun/net/httpserver/ServerStopTerminationTest.java fails intermittently in tier7

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/27670/files
  - new: https://git.openjdk.org/jdk/pull/27670/files/7ace98c1..d272f961

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27670&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27670&range=00-01

  Stats: 8884 lines in 224 files changed: 6433 ins; 1570 del; 881 mod
  Patch: https://git.openjdk.org/jdk/pull/27670.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27670/head:pull/27670

PR: https://git.openjdk.org/jdk/pull/27670