Bump model.k8s version based on org.etsi.osl.model.k8s#8

prepare values.yaml and docker-compose.yaml configure to merge with develop (docker images -> :develop) #30

fix: if tag exists and protected branch, APP_VERSION=tag

See merge request !37

Merging 2024Q2_RC into main, creating 2024Q2 Release (use variable tag name instead of REF_NAME at docker image building)

Merging 2024Q2_RC into develop (updating the pipeline that creates docker images for the main branch)

Merging 2024Q2_RC into main, creating 2024Q2 Release (updating the pipeline that creates docker images for the main branch)

- Kubernetes/helm/openslice/values.yaml: image tags must be switched to :develop
- Removed Kubernetes/template folder (legacy kubectl apply installation) + k8sdeploy + k8sremove

fix for #26

Merging 2024Q2_RC into develop

See merge request !32