Honor bind directive for ACME challenges

Fixes https://forum.caddyserver.com/t/basic-caddy-installation-failing-on-automatic-https/472?u=matt

caddyhttp/httpserver/plugin.go

@@ -332,8 +332,8 @@ func standardizeAddress(str string) (Address, error) {
 var directives = []string{
 	// primitive actions that set up the fundamental vitals of each config
 	"root",
-	"tls",
 	"bind",
+	"tls",
 
 	// services/utilities, or other directives that don't necessarily inject handlers
 	"startup",