Parameterize the rolling update k8s manifest files

[tamasmak]

Currently the rolling update k8s manifest files contain some parameters, e.g. version and app name, which are common in each config. These could be parameterized using the configuration management tool Kustomize.
Kustomize is a standalone tool to customize Kubernetes objects through a kustomization file. Since 1.14, Kubectl also supports the management of Kubernetes objects using a kustomization file.