class Chef

we use the LoadError this creates on early 12.x to not monkeypatch chef client versions that don't have Chef::ResourceBuilder (it is lazily included and doesn't appear until compile time so we can't resolve the symbol during library loading)

minimal monkeypatch necessary to implement the notifcation features of 12.10.x

if before notifications are also pulled into this monkeypatch then it may simply be easier to copy the entire Chef::Runner class from 12.10.24 into this file.