CapsuleConfiguration CRD

[prometherion]

Closes #122.

Rather than dealing with CLI flags, a new CRD is introduced.

apiVersion: capsule.clastix.io/v1alpha1
kind: CapsuleConfiguration
metadata:
  name: default
spec:
  userGroups: ["capsule.clastix.io"]
  forceTenantPrefix: false
  protectedNamespaceRegex: ""
  allowTenantIngressHostnamesCollision: false
  allowIngressHostnameCollision: false

All the options from CLI have been hardly deprecated, substituted with the new CRD reference (--configuration-name=default).

This is absolutely a breaking change but it's required to ship the 0.1.0 release.

We should have also good news regarding e2e testing since the configuration reloads is at runtime, allowing to skip the Pod respawning.

[prometherion]

Tests are running in ~6.30 minutes, we halved the average execution! 😎 🚀

[bsctl]

@prometherion amazing work.

[MaxFedotov]

@prometherion wow, that's great job!

[bsctl]

@prometherion LGTM!!!