Add support for job workers alongside deployment

[yorinasub17]

Describe the solution you'd like https://github.com/gruntwork-io/helm-kubernetes-services/issues/24 is for tracking a new helm chart for packaging applications into a Job or CronJob, assuming that is the main deployment model of the app (e.g., a batch processing job, or periodic scanner app that scans for vulnerabilities).

However, there are use cases for a Job or CronJob to augment a service deployment, such as for running a one time database migration on upgrades. For this use case, it is better to embed the Job/CronJob resource in the k8s-deployment helm chart.

This ticket is for tracking the integration between the k8s-job and k8s-service charts so that k8s-service can be used to invoke k8s-job to deploy one time tasks for the app.