Push down more state into /etc/podinfo

[spilchen]

This adds more information to /etc/podinfo. The motivation is that we want the vertica server to include this stuff in a new k8s specific DC table.

A summary of the new information in /etc/podinfo is as follows:

• k8s-build-date: Build date of the k8s server
• k8s-git-commit: The git commit of the k8s server
• k8s-version: The version of the k8s server
• annotations: A list of all of the annotations set for the pod
• namespace: The namespace the pod is created in
• operator-deployment-method: What method did we use to deploy the operator
• operator-version: What version of the operator are we using

As well, we are exposing the k8s node name and IP as environment variables:

• HOST_IP
• HOST_NODENAME

Two of the states (operator-deployment-method and operator-version) are fixed for the life of the operator. For this reason they come from a configMap that is populated either in the helm chart or the OLM bundle.

Also, changed PodFacts so that we have access to a Log.

[roypaulin]

Looks good. Just some typo in some comments.