hg: jdk/sandbox: 8247630: Use two key share entries

[chris.hegarty at oracle.com]

Changeset: 224016fee9aa
Author:    jnimeh
Date:      2020-07-27 18:20 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/224016fee9aa

8247630: Use two key share entries
Reviewed-by: xuelei

! src/java.base/share/classes/sun/security/ssl/KeyShareExtension.java
+ test/jdk/javax/net/ssl/TLSv13/ClientHelloKeyShares.java
+ test/jdk/javax/net/ssl/TLSv13/HRRKeyShares.java