Add new featuregate

Author: alikhanich

pkg/config/feature_gates.go

@@ -19,6 +19,7 @@ const (
 	EnableIPTargetType          Feature = "EnableIPTargetType"
 	SubnetsClusterTagCheck      Feature = "SubnetsClusterTagCheck"
 	NLBHealthCheckTimeout       Feature = "NLBHealthCheckTimeout"
+	ManageSecurityGroups		Feature = "ManageSecurityGroups"
 )
 
 type FeatureGates interface {
@@ -54,6 +55,7 @@ func NewFeatureGates() FeatureGates {
 			EnableIPTargetType:          true,
 			SubnetsClusterTagCheck:      true,
 			NLBHealthCheckTimeout:       true,
+			ManageSecurityGroups:		 true,
 		},
 	}
 }

pkg/service/model_build_target_group.go

@@ -603,6 +603,9 @@ func (t *defaultModelBuildTask) buildHealthCheckNetworkingIngressRules(trafficSo
 
 func (t *defaultModelBuildTask) buildManageSecurityGroupRulesFlag(_ context.Context) (bool, error) {
 	var rawEnabled bool
+	if !t.featureGates.Enabled(config.ManageSecurityGroups) {
+		return false, nil
+	}
 	exists, err := t.annotationParser.ParseBoolAnnotation(annotations.SvcLBSuffixManageSGRules, &rawEnabled, t.service.Annotations)
 	if err != nil {
 		return true, err