Define a Repository CRD and controller which watches Repository CRs and configures the relevant configmaps.

Summary

Upstream Issue:  https://github.com/argoproj/argo-cd/issues/5720 

Configuring Argo CD can be an arduous process with a growing number of configuration knobs in large configmaps and secrets. Example https://argoproj.github.io/argo-cd/operator-manual/argocd-cm.yaml

This enhancement proposal aims to introduce a set of strongly typed APIs a.k.a CRDs to make configuration of repository credentials.

Proposal

Define a ArgoCDConfig CRD and controller which watches ArgoCDConfig CRs and configures relevant configmaps that captures the equivalent of https://argoproj.github.io/argo-cd/operator-manual/argocd-cm.yaml for areas which aren’t covered by other CRDs.

Goals

• Build a set of operator-focused APIs that hide the configuration information that goes into argocd-cm.yaml

Use case

refer the upstream issue

Acceptance Criteria

• Decouple declaration of repositories from the main configuration argocd-cm.yaml
• Create an API equivalent to the GitRepositoryConfig CRD for reading `repository` and `repository.credentials`
• Controller watches for repository configuration in the GitRepositoryConfig CRs