[sshutil] Increase ssh retry timeout.

Change-Id: Ib16efc120e927b590285e94b12aad9fe3c63c7d0
diff --git a/sshutil/sshutil.go b/sshutil/sshutil.go
index 5f1e351..5546100 100644
--- a/sshutil/sshutil.go
+++ b/sshutil/sshutil.go
@@ -56,7 +56,7 @@
 
 	var client *ssh.Client
 	// TODO: figure out optimal backoff time and number of retries
-	if err := retry.Retry(ctx, retry.WithMaxDuration(&retry.ZeroBackoff{}, 10*time.Second), func() error {
+	if err := retry.Retry(ctx, retry.WithMaxDuration(&retry.ZeroBackoff{}, time.Minute), func() error {
 		var err error
 		client, err = ssh.Dial(network, address.String(), config)
 		return err