Update deployment examples files

• feat(deploy.Kubernetes): Add HorizontalPodAutoScaller default manifests (#15 (closed))
• feat(deploy.Kubernetes): Provide default PersistentVolumeClaim manifest for database storage (#16 (closed))
• change(deploy.Kubernetes): Use un-namespaced DNS names for service networking (#17 (closed))
• change(deploy.*): Update image in exaples to match new registry (#19 (closed))
• change(deploy.*): Update default resources requests and limits based on real world performances (#14 (closed))

Signed-off-by: Lunik lunik@tiwabbit.fr

Closes #14 (closed), #17 (closed), #19 (closed) Implements #15 (closed), #16 (closed)