hg: jdk/sandbox: http-client-branch: 8203433 (httpclient) Add tests for HEAD and 304 responses.

[michael.x.mcmahon at oracle.com]

Changeset: 30b27fe75b0a
Author:    michaelm
Date:      2018-05-30 12:01 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/30b27fe75b0a

http-client-branch: 8203433 (httpclient) Add tests for HEAD and 304 responses.

! src/java.net.http/share/classes/jdk/internal/net/http/Http1Response.java
! src/java.net.http/share/classes/jdk/internal/net/http/RedirectFilter.java
! src/jdk.httpserver/share/classes/sun/net/httpserver/ExchangeImpl.java
+ test/jdk/java/net/httpclient/HeadTest.java