Update vendor

vendor/github.com/theupdateframework/notary/client/repo_pkcs11.go

@@ -0,0 +1,25 @@
+// +build pkcs11
+
+package client
+
+import (
+	"fmt"
+
+	"github.com/theupdateframework/notary"
+	"github.com/theupdateframework/notary/trustmanager"
+	"github.com/theupdateframework/notary/trustmanager/yubikey"
+)
+
+func getKeyStores(baseDir string, retriever notary.PassRetriever) ([]trustmanager.KeyStore, error) {
+	fileKeyStore, err := trustmanager.NewKeyFileStore(baseDir, retriever)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create private key store in directory: %s", baseDir)
+	}
+
+	keyStores := []trustmanager.KeyStore{fileKeyStore}
+	yubiKeyStore, _ := yubikey.NewYubiStore(fileKeyStore, retriever)
+	if yubiKeyStore != nil {
+		keyStores = []trustmanager.KeyStore{yubiKeyStore, fileKeyStore}
+	}
+	return keyStores, nil
+}