Make CoreDNS a server type plugin for Caddy (#220)

* Make CoreDNS a server type plugin for Caddy

Remove code we don't need and port all middleware over. Fix all tests
and rework the documentation.

Also make `go generate` build a caddy binary which we then copy into
our directory. This means `go build`-builds remain working as-is.

And new etc instances in each etcd test for better isolation.
Fix more tests and rework test.Server with the newer support Caddy offers.

Fix Makefile to support new mode of operation.

1 files changed, 0 insertions, 29 deletions

diff --git a/core/assets/path.go b/core/assets/path.go
deleted file mode 100644
index abe4638d0..000000000
--- a/core/assets/path.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package assets
-
-import (
-	"os"
-	"path/filepath"
-	"runtime"
-)
-
-// Path returns the path to the folder
-// where the application may store data. This
-// currently resolves to ~/.coredns
-func Path() string {
-	return filepath.Join(userHomeDir(), ".coredns")
-}
-
-// userHomeDir returns the user's home directory according to
-// environment variables.
-//
-// Credit: http://stackoverflow.com/a/7922977/1048862
-func userHomeDir() string {
-	if runtime.GOOS == "windows" {
-		home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
-		if home == "" {
-			home = os.Getenv("USERPROFILE")
-		}
-		return home
-	}
-	return os.Getenv("HOME")
-}