RFR: 9: 8158569: ImpactOnSNI.java test failed with timeout

[Rajan Halade]

Please help with your review of this patch. I was not able to reproduce 
the timeout but thread dump indicates that test timed out on waiting for 
server thread to join. Server thread is kept waiting on accept if client 
doesn't connect.

This patch allows test to throw exception, if any, on client or server 
side eliminating this timeout scenario.

Webrev: http://cr.openjdk.java.net/~rhalade/8158569/webrev.00/

Thanks,
Rajan