git: openjdk/jdk-sandbox: simpleserver: 2 new changesets

[Julia Boes]

Changeset: 591aeccf
Author:    Julia Boes <julia.boes at oracle.com>
Date:      2021-07-15 14:39:57 +0000
URL:       https://git.openjdk.java.net/jdk-sandbox/commit/591aeccfb084f344b339a7d76a269ba0279e286f

use Headers.of and expand its testing

! src/jdk.httpserver/share/classes/com/sun/net/httpserver/Headers.java
! src/jdk.httpserver/share/classes/com/sun/net/httpserver/Request.java
! src/jdk.httpserver/share/classes/module-info.java
! src/jdk.httpserver/share/classes/sun/net/httpserver/ExchangeImpl.java
! test/jdk/com/sun/net/httpserver/HeadersTest.java
! test/jdk/com/sun/net/httpserver/UnmodifiableHeadersTest.java
! test/jdk/com/sun/net/httpserver/simpleserver/RequestTest.java

Changeset: 27856998
Author:    Julia Boes <julia.boes at oracle.com>
Date:      2021-07-15 17:40:16 +0000
URL:       https://git.openjdk.java.net/jdk-sandbox/commit/278569983517b6d7d3cd557abfd07b6f4501c24c

make DelegatingHttpExchange abstract

! src/jdk.httpserver/share/classes/sun/net/httpserver/DelegatingHttpExchange.java