hg: jdk/sandbox: http-client-branch: fixing synchronization problem in ping test

[michael.x.mcmahon at oracle.com]

Changeset: 45c88bf0592b
Author:    michaelm
Date:      2017-11-24 20:48 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/45c88bf0592b

http-client-branch: fixing synchronization problem in ping test

! test/jdk/java/net/httpclient/http2/BasicTest.java
! test/jdk/java/net/httpclient/http2/server/Http2TestExchange.java
! test/jdk/java/net/httpclient/http2/server/Http2TestExchangeImpl.java
! test/jdk/java/net/httpclient/http2/server/Http2TestServerConnection.java