add featgate

Signed-off-by: Sinelnikov Michail <mikhail.sinelnikov@flant.com>

Author: Sinelnikov Michail

pkg/helm/nelm/nelm.go

@@ -15,6 +15,7 @@ import (
 	"github.com/deckhouse/deckhouse/pkg/log"
 	"github.com/werf/nelm/pkg/action"
 	"github.com/werf/nelm/pkg/common"
+	"github.com/werf/nelm/pkg/featgate"
 	nelmLog "github.com/werf/nelm/pkg/log"
 	"helm.sh/helm/v3/pkg/cli"
 	"k8s.io/cli-runtime/pkg/genericclioptions"
@@ -93,6 +94,8 @@ func NewNelmClient(opts *CommonOptions, logger *log.Logger, labels map[string]st
 		maps.Copy(clientLabels, labels)
 	}
 
+	featgate.FeatCleanNullFields.Enable()
+
 	return &NelmClient{
 		logger:  logger.With("operator.component", "nelm"),
 		labels:  clientLabels,