[jdk11u-dev] RFR: 8230435: Replace wildcard address with loopback or local host in tests - part 22

[Goetz Lindenmaier]

I backport this for parity with 11.0.21-oracle.

test/jdk/com/sun/net/httpserver/bugs/8199849/BasicAuthenticatorCharset.java
This test was only added in 14 by "8199849 Add support for UTF-8 encoded credentials in HTTP Basic Authentication". Skipped.

PortUnreachable.java depends on part 3. As that change of this series is hard to backport,
I just include the respective parts in this change. See extra commit. They apply clean.

test/jdk/sun/net/www/protocol/https/HttpsURLConnection/B6216082.java
Backport of later "8268464: Remove dependancy of TestHttpsServer, HttpTransaction, HttpC..." makes these
changes pointless. Skipped.

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Commit messages:
 - Backport f71db3074c44c554b600c506adaa5b145edf4420
 - Parts of 8223465 wildcard part 3

Changes: https://git.openjdk.org/jdk11u-dev/pull/2252/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2252&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8230435
  Stats: 207 lines in 13 files changed: 152 ins; 4 del; 51 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2252.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2252/head:pull/2252

PR: https://git.openjdk.org/jdk11u-dev/pull/2252