change tunnel-edge config to use 127.0.0.1 as the server name, because ALI Cloud will ban the tunnel.cloud.io

Author: dodiadodia

pkg/edgeadm/constant/manifests/tunnel-edge.go

@@ -32,7 +32,7 @@ data:
                 [mode.edge.stream.client]
                     token = "{{.TunnelCloudEdgeToken}}"
                     cert = "/etc/superedge/tunnel/certs/cluster-ca.crt"
-                    dns = "tunnel.cloud.io"
+                    dns = "127.0.0.1"
                     servername = "{{.MasterIP}}:{{.TunnelPersistentConnectionPort}}"
                     logport = 51010
                 [mode.edge.https]