go.crypto: use golang.org/x/... import paths

LGTM=bradfitz
R=rsc, bradfitz
CC=golang-codereviews
https://golang.org/cl/167190043
diff --git a/ssh/test/cert_test.go b/ssh/test/cert_test.go
index 95a12c1..364790f 100644
--- a/ssh/test/cert_test.go
+++ b/ssh/test/cert_test.go
@@ -10,7 +10,7 @@
 	"crypto/rand"
 	"testing"
 
-	"code.google.com/p/go.crypto/ssh"
+	"golang.org/x/crypto/ssh"
 )
 
 func TestCertLogin(t *testing.T) {