hg: jdk/jdk12: 8214339: SSLSocketImpl erroneously wraps SocketException

[xuelei.fan at oracle.com]

Changeset: 9041178a0b69
Author:    xuelei
Date:      2018-12-14 19:39 -0800
URL:       http://hg.openjdk.java.net/jdk/jdk12/rev/9041178a0b69

8214339: SSLSocketImpl erroneously wraps SocketException
Reviewed-by: ascarpino, jnimeh

! src/java.base/share/classes/sun/security/ssl/Alert.java
! src/java.base/share/classes/sun/security/ssl/KeyShareExtension.java
! src/java.base/share/classes/sun/security/ssl/PreSharedKeyExtension.java
! src/java.base/share/classes/sun/security/ssl/TransportContext.java
+ test/jdk/javax/net/ssl/templates/SSLContextTemplate.java
+ test/jdk/sun/security/ssl/SSLSocketImpl/SSLExceptionForIOIssue.java