Implement a DeploymentCommand

[jeromy-cannon]

• solo deployment create - create a namespace in a cluster and upload the configuration
• solo deployment list -cluster solo-1 - give cluster and return a list of solo deployments on that cluster

NOTE:

• make the tool similar to kubectl and treat it like a context or deployment with a default deployment, then it is more familiar to the people that understand kubernetes and helm which is what is being used under the covers
• google cloud and others give you a tool to modify the config, if let the users modify the config directly you need to sanitize it, we want to Solo to control editing its config