Integrate with Cert Manager

[etsauer]

We would like to explore how we might use this project as a wrapper around Jetstack Cert Manager. This project is gaining a lot of traction, even getting PKI vendors to contribute plugins. what they don't have is support for OpenShift, specifically routes.

[etsauer]

@sysmatrix1 @raffaelespazzoli @sabre1041

[raffaelespazzoli]

I created a OCP helm chart for cert manager.
changed only a few things from the original. I mainly eliminated the validation admission webhook which complicated things too much in my opinion.
you can find it here:
https://github.com/raffaelespazzoli/openshift-cert-manager

[etsauer]

I did some noodling on how this might work, and scratched out a workflow:

[raffaelespazzoli]

I suggest watching on the created secret rather than on the certificate CR.
That way you get notified also when certificates are renewed.

[sabre1041]

@etsauer @raffaelespazzoli can we start a google doc to include these design discussions?