Add support for labels and annotations

[jaideepr97]

We need a way to set specific labels and annotations on deployed resources like deployments and services

spec:
  image: ghcr.io/modelcontextprotocol/servers/github:latest
  port: 8080
  # Applied to Deployment, Service, AND pod template
  labels:
    team: platform
    cost-center: "12345"
  annotations:
    app.kubernetes.io/managed-by: mcp-lifecycle-operator

[kincoy]

Thanks for opening this! +1 on this feature.
One thing to consider: should we differentiate between resource-level and pod-level labels/annotations?
In practice they serve different purposes:

• Resource labels (on Deployment/Service): team, cost-center, etc. - for resource management
• Pod labels/annotations: prometheus scraping, sidecar injection, etc. - for runtime behavior

For example, prometheus.io/scrape: "true" annotation only makes sense on the Pod template. Prometheus doesn't look at Deployment annotations.
Maybe something like:

spec:
  labels:
    team: platform

  podAnnotations:
    prometheus.io/scrape: "true"
    sidecar.istio.io/inject: "true"

Thoughts?

[jaideepr97]

makes sense @kincoy
I did think about that while opening this issue, it kinda ties into #11 so I wasn't sure how granular we want to get in the first iteration. It could be that we add it now and then end up removing it in favor of the full podspec later

[kincoy]

yeah,, I'd like to towards keeping it simple for v1alpha1.
Just labels and annotations applied to all resources for now. if #11 introduces podTemplate, we can make it granular then.