Kubernetes Client uses deprecated apis removed on recent versions of K8S (v1.17+)

[loicalbertin]

Bug Report

Description

Expected behavior

Should work on recent Kubernetes version

Actual behavior

Yorc fails to create Deployments & StatefulSets on Kubernetes 1.17+.
This is because we use resources in v1betaX API versions that are deprecated for ages and now removed from recent API versions.

Steps to reproduce the issue

1. Use a Kubernetes v1.17+ (Use forge component if needed)
2. Try to deploy a Deployment or statefulset

Additional information you deem important (e.g. issue happens only occasionally)

Jobs are not impacted.

Additional environment details (infrastructure implied: AWS, OpenStack, etc.)

Kubernetes