upstream: Increase keyscan timeout from default. On slow hosts 3

concurrent keyscans can hit the default 5 second timeout, so increase to 15
seconds.

OpenBSD-Regress-ID: 16383dec166af369b7fb9948572856f5d544c93f
diff --git a/regress/keyscan.sh b/regress/keyscan.sh
index b8593fe..75a14ee 100644
--- a/regress/keyscan.sh
+++ b/regress/keyscan.sh
@@ -1,4 +1,4 @@
-#	$OpenBSD: keyscan.sh,v 1.12 2019/12/16 02:39:05 djm Exp $
+#	$OpenBSD: keyscan.sh,v 1.13 2020/01/22 07:31:27 dtucker Exp $
 #	Placed in the Public Domain.
 
 tid="keyscan"
@@ -16,7 +16,7 @@
 
 for t in $SSH_KEYTYPES; do
 	trace "keyscan type $t"
-	${SSHKEYSCAN} -t $t -p $PORT 127.0.0.1 127.0.0.1 127.0.0.1 \
+	${SSHKEYSCAN} -t $t -T 15 -p $PORT 127.0.0.1 127.0.0.1 127.0.0.1 \
 		> /dev/null 2>&1
 	r=$?
 	if [ $r -ne 0 ]; then