hg: jdk/sandbox: 8230526: jdk.internal.net.http.PlainProxyConnection is never reused by HttpClient

[chris.hegarty at oracle.com]

Changeset: 734f7711f87c
Author:    dfuchs
Date:      2019-09-09 18:23 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/734f7711f87c

8230526: jdk.internal.net.http.PlainProxyConnection is never reused by HttpClient
Summary: fixed the PlainProxyConnection lookup key.
Reviewed-by: chegar

! src/java.net.http/share/classes/jdk/internal/net/http/ConnectionPool.java
+ test/jdk/java/net/httpclient/PlainProxyConnectionTest.java