Fix an issue with yaml inline usage not taking pointers

cmd/acmeserver/acmeserver.go

@@ -23,7 +23,7 @@ var (
 // Config ties together the acmeserver Config and the standard
 // serverutil HTTP server configuration.
 type Config struct {
-	ACME   *acmeserver.Config       `yaml:",inline"`
+	ACME   acmeserver.Config        `yaml:",inline"`
 	Server *serverutil.ServerConfig `yaml:"http_server"`
 }