git: openjdk/mobile: 8235925: java/net/Socket/HttpProxy.java fails on IPv4 only hosts and other small cleanups

[duke]

Changeset: e16d4a45
Author:    Daniel Fuchs <dfuchs at openjdk.org>
Date:      2019-12-17 16:11:16 +0000
URL:       https://git.openjdk.java.net/mobile/commit/e16d4a45

8235925: java/net/Socket/HttpProxy.java fails on IPv4 only hosts and other small cleanups

HttpProxy test is fixed to take into account the possibility that the host may be configured with IPv4 only

Reviewed-by: chegar

= test/jdk/java/net/MulticastSocket/NoSetNetworkInterface.java
! test/jdk/java/net/Socket/HttpProxy.java
! test/jdk/java/net/SocketOption/OptionsTest.java