Use the heat-container-agent from a system container.
It means that the docker daemon can be started later.
Pass as a software deployment with the heat-agent the following
software-configurations:
* prometheus-monitoring
** pin prometheus to v1.8.2 since its config is not 2.0.0
compatible
Add heat-container-agent container image.
Implements: blueprint heat-agent
Related-Bug: #1680900
Change-Id: I084b7fe51eddb7b36c74f9fe76cda37e8b48f646
Profit from the default cAdvisor deployed by k8s to deploy the
remaining monitoring stack on top, made of node-exporter,
Prometheus and Grafana.
Node-exporter is ran as a normal pod through a manifest, while
Prometheus and Grafana are deployments with 1 replica.
Prometheus has compliance with Kubernetes, so the discovery of
the nodes and other k8s components is configured directly in
Prometheus configuration.
Change-Id: If2cab996b9458580a55b5212ab298c909622e7f3
Partially-Implements: blueprint container-monitoring
Spyros Trigazis