update router to adapt to protobuf change

infra/conf/synthetic/router/router.go

@@ -93,7 +93,7 @@ type RouterConfig struct {
 	cfgctx context.Context
 }
 
-func (c *RouterConfig) getDomainStrategy() router.Config_DomainStrategy {
+func (c *RouterConfig) getDomainStrategy() router.DomainStrategy {
 	ds := ""
 	if c.DomainStrategy != nil {
 		ds = *c.DomainStrategy
@@ -103,13 +103,13 @@ func (c *RouterConfig) getDomainStrategy() router.Config_DomainStrategy {
 
 	switch strings.ToLower(ds) {
 	case "alwaysip", "always_ip", "always-ip":
-		return router.Config_UseIp
+		return router.DomainStrategy_UseIp
 	case "ipifnonmatch", "ip_if_non_match", "ip-if-non-match":
-		return router.Config_IpIfNonMatch
+		return router.DomainStrategy_IpIfNonMatch
 	case "ipondemand", "ip_on_demand", "ip-on-demand":
-		return router.Config_IpOnDemand
+		return router.DomainStrategy_IpOnDemand
 	default:
-		return router.Config_AsIs
+		return router.DomainStrategy_AsIs
 	}
 }