RFR: 8313997: The jdi/ListeningConnector/startListening/startlis001 may fail if the hosts file is modified

[Sergey Bylokhov]

The test uses this code to create a list of valid addresses for the localhost:

        String hostname = "localhost";
        List<String> validAddresses = new LinkedList<>();
        validAddresses.add(hostname);
        Arrays.stream(InetAddress.getAllByName(hostname))
                    .forEach(address -> validAddresses.add(address.getHostAddress()));

It does not work properly if the custom name is set for the 127.0.01 via /etc/hosts file. In that case, the address returned by the "startListen()" will be "SomeCustomName:port", for example we can return it here:
https://github.com/openjdk/jdk/blob/360f65d7b15b327e2f160c42f318945cc6548bda/src/jdk.jdi/share/classes/com/sun/tools/jdi/SocketTransportService.java#L82

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Commit messages:
 - 8313997: The jdi/ListeningConnector/startListening/startlis001 may fail if the hosts file is modified

Changes: https://git.openjdk.org/jdk/pull/15203/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15203&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313997
  Stats: 19 lines in 1 file changed: 12 ins; 3 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/15203.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15203/head:pull/15203

PR: https://git.openjdk.org/jdk/pull/15203