Use new style form to register directives
Use new style form to register directives

See
https://github.com/mholt/caddy/commit/17709a7d3f1a6ee0c34bdb81c6332b1339ea7085
where there was a slight change (for the better) on how to register.

Fix the CoreDNS to adhire to this. Needs Caddy from master to compile at
this moment.

varyoo/coredns,yongtang/coredns,ii/coredns,ii/coredns,johnbelamaric/coredns,miekg/coredns,jremond/coredns,johnbelamaric/coredns,jremond/coredns,coredns/coredns,miekg/coredns,chrisohaver/coredns