List Fission resource for specific namespace in executor reaper (#2587)

* pool manager to work with specific namespaces

* code review changes and revert changes for go.mod and values.yaml file

pkg/executor/executortype/poolmgr/gpm.go

@@ -583,27 +583,30 @@ func (gpm *GenericPoolManager) idleObjectReaper(ctx context.Context) {
 }
 
 func (gpm *GenericPoolManager) doIdleObjectReaper(ctx context.Context) {
-	envs, err := gpm.fissionClient.CoreV1().Environments(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
+	envList := make(map[k8sTypes.UID]struct{})
+	for _, namespace := range utils.GetNamespaces() {
+		envs, err := gpm.fissionClient.CoreV1().Environments(namespace).List(ctx, metav1.ListOptions{})
 		if err != nil {
-		gpm.logger.Error("failed to get environment list", zap.Error(err))
+			gpm.logger.Error("failed to get environment list", zap.Error(err), zap.String("namespace", namespace))
 			return
 		}
 
-	envList := make(map[k8sTypes.UID]struct{})
 		for _, env := range envs.Items {
 			envList[env.ObjectMeta.UID] = struct{}{}
 		}
-
-	fns, err := gpm.fissionClient.CoreV1().Functions(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
-	if err != nil {
-		gpm.logger.Error("failed to get environment list", zap.Error(err))
-		return
 	}
 
 	fnList := make(map[k8sTypes.UID]fv1.Function)
+	for _, namespace := range utils.GetNamespaces() {
+		fns, err := gpm.fissionClient.CoreV1().Functions(namespace).List(ctx, metav1.ListOptions{})
+		if err != nil {
+			gpm.logger.Error("failed to get environment list", zap.Error(err), zap.String("namespace", namespace))
+			return
+		}
 		for i, fn := range fns.Items {
 			fnList[fn.ObjectMeta.UID] = fns.Items[i]
 		}
+	}
 
 	funcSvcs, err := gpm.fsCache.ListOldForPool(time.Second * 5)
 	if err != nil {