go/net/ssh: allow multiple AuthMethods

Change-Id: Icdd8c12bc959f87271db4abba3219edd0ea1b7ca
Reviewed-on: https://review.monogon.dev/c/monogon/+/3434
Tested-by: Jenkins CI
Reviewed-by: Lorenz Brun <lorenz@monogon.tech>
diff --git a/go/net/ssh/ssh_client.go b/go/net/ssh/ssh_client.go
index 1c52484..d0a0518 100644
--- a/go/net/ssh/ssh_client.go
+++ b/go/net/ssh/ssh_client.go
@@ -36,8 +36,8 @@
 // DirectClient implements Client (and Connection) using
 // golang.org/x/crypto/ssh.
 type DirectClient struct {
-	AuthMethod ssh.AuthMethod
-	Username   string
+	AuthMethods []ssh.AuthMethod
+	Username    string
 }
 
 type directConn struct {
@@ -54,9 +54,7 @@
 	}
 	conf := &ssh.ClientConfig{
 		User: p.Username,
-		Auth: []ssh.AuthMethod{
-			p.AuthMethod,
-		},
+		Auth: p.AuthMethods,
 		// Ignore the host key, since it's likely the first time anything logs into
 		// this device, and also because there's no way of knowing its fingerprint.
 		HostKeyCallback: ssh.InsecureIgnoreHostKey(),