kill stratotemplate and cumulus

[ihodes]

Since we don't plan on developing them, nor do we recommend people use them, it might be helpful to shut these repos down? If not, we should at least recommend it.

[hammer]

No need to kill but I think making a note that we're not actively developing these projects and point to coclobas would be nice

[smondet]

@hammer Like this?

and

[hammer]

Works for me!