middleware/directives: check if package exist on the file system (#767)
middleware/directives: check if package exist on the file system (#767)


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