upstream: Skip RFC4716 format import and export tests when built

without OpenSSL.

OpenBSD-Regress-ID: d2c2d5d38c1acc2b88cc99cfe00a2eb8bb39dfa4

regress/keygen-convert.sh

@@ -1,4 +1,4 @@
-#	$OpenBSD: keygen-convert.sh,v 1.5 2021/07/23 05:53:02 dtucker Exp $
+#	$OpenBSD: keygen-convert.sh,v 1.6 2021/07/24 02:57:28 dtucker Exp $
 #	Placed in the Public Domain.
 
 tid="convert keys"
@@ -9,12 +9,17 @@ echo hunter2
 EOD
 chmod u+x $OBJ/askpass
 
+if ${SSHKEYGEN} -? 2>&1 | grep "ssh-keygen -e" >/dev/null; then
+	test_import_export=1
+fi
+
 for t in ${SSH_KEYTYPES}; do
 	# generate user key for agent
 	trace "generating $t key"
 	rm -f $OBJ/$t-key
 	${SSHKEYGEN} -q -N "" -t $t -f $OBJ/$t-key
 
+	if test "x$test_import_export" = "x1"; then
 		trace "export $t private to rfc4716 public"
 		${SSHKEYGEN} -q -e -f $OBJ/$t-key >$OBJ/$t-key-rfc || \
 		    fail "export $t private to rfc4716 public"
@@ -33,6 +38,7 @@ for t in ${SSH_KEYTYPES}; do
 		cut -f1,2 -d " " $OBJ/$t-key.pub >$OBJ/$t-key-nocomment.pub
 		cmp $OBJ/$t-key-nocomment.pub $OBJ/$t-rfc-imported || \
 		    fail "$t imported differs from original"
+	fi
 
 	trace "set passphrase $t"
 	${SSHKEYGEN} -q -p -P '' -N 'hunter2' -f $OBJ/$t-key >/dev/null || \