add app, add nfs operator

Cluster/nfs/nfs-install.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# From ALL k8s-nodes
+apt install -y nfs-common && systemctl enable rpcbind && systemctl start rpcbind
+
+# from Lens
+kubectl create ns nfs-provisioner
+
+# Check VALUES BEFORE !!!
+helm upgrade --install nfs-provisioner -n nfs-provisioner nfs-provisioner