Automate the release procedure

[goldenrye]

When we create a release, we also need to create some images for this release and the configuration file also needs modified accordingly. An example the following configuration under file polycube/src/components/k8s/pcn-k8s.yaml
image: polycubenetwork/k8s-pod-network:latest

There could be more of similar configurations need to be identified and modified automatically by a tool when create a release, but this won't work for tagging a release.

To cover both cases maybe we should only allow the template file in the source code like,
image: polycubenetwork/k8s-pod-network:<release_name>

[acloudiator]

@mauriciovasquezbernal is working on something similar (not sure if it's exactly this one)

[mauriciovasquezbernal]

@acloudiator I think it is a misunderstanding, I am not working on this nor something similar now.

[acloudiator]

@mauriciovasquezbernal Gotcha! Thanks for the clarification!
Hence, no one is assigned here. @goldenrye certainly we need to plan for it.