Addtional boilerplate options missing from chart

[flah00]

Following up on /issues/49, I'd like to add that helm create generates boilerplate for a chart and provides a bevy of options missing. I hope they will be included, as their absence makes it difficult to use this chart.

• templates/_helpers.tpl includes a lot of helpful functions... chief among them resource name length controls
  • well known labels
• resources: In my experience this is a critical setting for resource hungry applications like nexus. Declaring resources allows the scheduler to guarantee quality of service.
• imagePullSecrets: docker.io has very restrictive pull rate-limits for anonymous users. This is a critical option for avoiding rate limiting.
• name overrides: This is a nice option to offer users. There's no need to force users to live with hard to remember helm release names.
• podAnnotations: Crucial ad-hoc configuration for metrics and logs
• affinity: Crucial for pod colocation. Cluster operators should be able to attract or repel pods.
• tolerations: Crucial for scheduling.
• nodeSelector: Crucial for scheduling. We use karpenter, which offers a rich set node selector options, freeing us from node groups.