Update Quickstart docs

Quickstart.md

@@ -31,7 +31,7 @@
 - check values.yaml
 
 Easiest way to get the ARNs for various IAM roles is to use the CloudBender output command:  
-```cloudbender outputs config/kube-control-plane.yaml```
+`cloudbender outputs config/kube-control-plane.yaml`
 
 ## Deploy KubeZero Helm chart
 `./deploy.sh`
@@ -50,5 +50,27 @@ Currently it is very likely that you need to manually trigger sync runs for `cer
 eg. `argocd app cert-manager sync`
 
 
+# Only proceed any further if all Argo Applications show healthy !!
+
+
+## WIP not yet integrated into KubeZero
+
+### EFS CSI 
+To deploy the EFS CSI driver the backing EFS filesystem needs to be in place ahead of time. This is easy to do by enabling the EFS functionality in the worker CloudBender stack.  
+
+- retrieve the EFS: `cloudbender outputs config/kube-control-worker.yaml` and look for *EfsFileSystemId*
+- update values.yaml in the `aws-efs-csi` artifact folder as well as the efs_pv.yaml
+- execute `deploy.sh`
+
+### Istio
+Istio is currently pinned to version 1.4.X as this is the last version supporting installation via helm charts. 
+
+Until Istio is integrated into KubeZero as well as upgraded to 1.6 we have to install manually.  
+
+- adjust values.yaml
+- update domain in `ingress-certificate.yaml`
+- update.sh
+- deploy.sh
+
 # Demo / own apps
 - Add your own application to ArgoCD via the cli