fix(app): dont validate stack name [EE-6379] (#10701)

Co-authored-by: testa113 <testa113>

api/http/handler/stacks/update_kubernetes_stack.go

@@ -41,9 +41,6 @@ func (payload *kubernetesFileStackUpdatePayload) Validate(r *http.Request) error
 	if govalidator.IsNull(payload.StackFileContent) {
 		return errors.New("Invalid stack file content")
 	}
-	if govalidator.IsNull(payload.StackName) {
-		return errors.New("Invalid stack name")
-	}
 	return nil
 }