Add Kubernetes/Monogon support for test deployments

[gregcusack]

Problem

1. GCE is expensive.
2. We need to be able to run test deployments with 1000s of validators. We have Monogon servers, so let's put Solana validators in kubernetes pods and spin up a bunch at a time.

Summary of Changes

Current functionality includes:

• Build a validator from either local git hash or pull release version from solana releases
• Build docker image and push to docker registry
• Generate faucet, bootstrap, and other validator accounts
• Generate genesis with bootstrap account (including spl-genesis-args).
• Pull docker images, build kubernetes controller and deploy 1 validator per pod. 1 pod per replicaset. 1 service per replicaset
• Mounts genesis (as configmap) and respective accounts (as secrets) into each validator pod
• Bootstrap validator starts up
• Validators wait for bootstrap to start before deploying and connecting to bootstrap.
• Can exec into bootstrap pod and verify validators are all connected with solana -ul gossip and solana -ul validators
• Metrics Enabled
• Client support

See solana/k8s-cluster/README.md for a tutorial on how to run for yourself.

WIP:

• adding in additional validator configuration flags. that is coming.....

TODO:

• blockstreamer
  Fixes #

[willhickey]

This repository is no longer in use. Please re-open this pull request in the agave repo: https://github.com/anza-xyz/agave