Thanks for your feedback. This is planned as part of global waf configurable parameters.
We are looking at options to enable this.Russ Freeman commented
Great if LetsEncrypt was one of the Key Vault known providers, alongside the two paid services.
We have done a lot of progress on this area in last few years, and we would like to know if there is something scenario specific that you guys are looking for?
Azure Portal TeamRuss Freeman commented
I think generating the script for something complicated like setting up app gateway / WAF would be very useful. But I would think that once you have the basic code gen fundamentals in place, you could generate the code for any resource.