Helm local dev

[ldelossa]

This PR implements a kubernetes driven local development environment. It's expected that kubernetes clusters be ran via minikube or docker desktop. If the developer decides to run kubernetes by a different manner they will just need to make sure their docker cli tool is configured to push build context to said kubernetes cluster.

A makefile is used to drive the local development environment. On first run of make deploy-local both a clair and a postgres instance are built and ran on the local kubernetes cluster. Subsequent calls to make deploy-local build a new container with the latest code in the working directory and only deploys clair, leaving any writes to the database intact.

Running make teardown-local will remove both the cliar and postgres instances from the local kubernetes.

[jzelinskie]

Looks pretty good so far.

I actually wouldn't mind a commit that deletes the whole contrib directory in this PR.

[ldelossa]

@jzelinskie if we remove the contrib dir all together, do we want to preserve anything in there like the grafana templates? We could potentially make them part of the local dev env also.