Add default resource requests for helm install

[vordimous]

Is your feature request related to a problem? Please describe.
The Zilla helm install can include default requested resource amounts to optimize Zilla. Users will still be able to tune resources manually if needed

Describe the solution you'd like
Add default resources to the value.yaml in the helm chart

resources:
  requests:
    CPU: "1"
    memory: 256Mi

Additional context
Default limits aren't needed.