Support scanning for updates to Helm-backed ArgoCD Application CRDs

[jstewart612]

Is your feature request related to a problem? Please describe.
ArgoCD has the concept of Application CRDs. These can source from Helm charts themselves, but do not install helm in the traditional manner. Rather, it renders the templates, and then applies those to the cluster. As such, you do not see helm installs with the helm cli, and as such, Nova seems not to be able to find them and assess upgradable candidates.

This feature request is to add this functionality to Nova.

Describe the solution you'd like
Add a flag to Nova to allow it to also scan ArgoCD Application CRD instances on your cluster and check them for updates if they are based on Helm charts.

Describe alternatives you've considered
I am unaware that any exist.

Additional context
I don't see that any is required here but let me know if you do.

[jstewart612]

If it is helpful for implementation, the fields you'd be looking to scan of that CRD are:

.spec.source.helm.chart: the chart name
.spec.source.helm.targetRevision: A Semantic Release compatible version value

[rbren]

Thanks for the request! This is a great idea

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[jstewart612]

still needed

[jstewart612]

A colleague actually did work on this locally and I have recommended submission here for wider adoption of the feature.

[hungran]

+1 on this feature, we have a lot of external applications implement by gitops approach - argocd then we are finding a way to check if whether they was update or release.