Integrate PVC and persistent volume management k8s

Author: Visco01

k8s/delete-deployments.sh

@@ -1,2 +1,4 @@
 kubectl delete all --all
 kubectl delete ingress --all
+# Comment out the following line if you want to keep the persistent volumes
+kubectl delete pvc --all && kubectl delete pv --all

k8s/deploy.sh

@@ -39,6 +39,9 @@ else
     echo "Secret 'postgres-secret' created successfully."
 fi
 
+# Be careful with the following commands
+kubectl delete pvc --all && kubectl delete pv --all
+
 kubectl apply -f ndb-deployment.yml
 
 kubectl apply -f ndb-rest-api-deployment.yml