RFR: 8299487: Test java/net/httpclient/whitebox/SSLTubeTestDriver.java timed out

[Daniel Fuchs]

Here is a trivial change that might fix intermittent failures in the test java/net/httpclient/whitebox/SSLTubeTestDriver.java.
The change makes sure the client connects using the loopback address instead of "localhost".

In case that does not fix the issue, some additional logging has been added to try to understand what's going on.

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Commit messages:
 - 8299487
 - 8299487

Changes: https://git.openjdk.org/jdk/pull/19663/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19663&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299487
  Stats: 11 lines in 1 file changed: 8 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/19663.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19663/head:pull/19663

PR: https://git.openjdk.org/jdk/pull/19663