Add a test for the ticket callback.

Change-Id: I7b2a4f617bd8d49c86fdaaf45bf67e0170bbd44f
Reviewed-on: https://boringssl-review.googlesource.com/5230
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/ssl/test/runner/common.go b/ssl/test/runner/common.go
index 928c2b2..c7ccf80 100644
--- a/ssl/test/runner/common.go
+++ b/ssl/test/runner/common.go
@@ -720,6 +720,10 @@
 	// EmptyCertificateList, if true, causes the server to send an empty
 	// certificate list in the Certificate message.
 	EmptyCertificateList bool
+
+	// ExpectNewTicket, if true, causes the client to abort if it does not
+	// receive a new ticket.
+	ExpectNewTicket bool
 }
 
 func (c *Config) serverInit() {