RFR: 8371559: Intermittent timeouts in test javax/net/ssl/Stapling/HttpsUrlConnClient.java [v3]

[Arno Zeller]

> The test javax/net/ssl/Stapling/HttpsUrlConnClient.java sometimes hangs and run into timeouts. By adding some more tracing it showed that it can happen on machines with high load that the client thread throws a "Server not ready yet" RuntimeException because it only waits for 5 seconds for the server thread to come available.
> I added some more output in case of errors to better see the issue and use the timeout factor to modify the maximum wait time.

Arno Zeller has updated the pull request incrementally with one additional commit since the last revision:

  Improve comment and watch line length.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/28784/files
  - new: https://git.openjdk.org/jdk/pull/28784/files/d2be50fa..40c09e14

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28784&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28784&range=01-02

  Stats: 12 lines in 1 file changed: 2 ins; 0 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/28784.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28784/head:pull/28784

PR: https://git.openjdk.org/jdk/pull/28784