feat: add DeploymentConfig support

[szubersk]

Add support for OpenShift's DeploymentConfig. DeploymentConfig is an enhanced Deployment.

Deployment Configs define the template for a pod and manages deploying new images or configuration changes. A single deployment configuration is usually analogous to a single micro-service. Can support many different deployment patterns, including full restart, customizable rolling updates, and fully custom behaviors, as well as pre- and post- deployment hooks. Each individual deployment is represented as a replication controller.

A deployment is "triggered" when its configuration is changed or a tag in an Image Stream is changed. Triggers can be disabled to allow manual control over a deployment. The "strategy" determines how the deployment is carried out and may be changed at any time. The latestVersion field is updated when a new deployment is triggered by any means.

[CLAassistant]

All committers have signed the CLA.

[chen-keinan]

lgtm 🚀