[ANSIBLE] Add cert-manager role

A role that provisions the cert-manager (https://cert-manager.io/)
onto Kubernetes cluster

Change-Id: Iced3be4fae7ed20be8f58662b03a8a97b454b470
Issue-ID: OOM-2871
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
8 files changed