Remove the word middleware (#1067)

* Rename middleware to plugin

first pass; mostly used 'sed', few spots where I manually changed
text.

This still builds a coredns binary.

* fmt error

* Rename AddMiddleware to AddPlugin

* Readd AddMiddleware to remain backwards compat

1 files changed, 0 insertions, 55 deletions

diff --git a/middleware/errors/setup.go b/middleware/errors/setup.go
deleted file mode 100644
index af9a7bbff..000000000
--- a/middleware/errors/setup.go
+++ /dev/null
@@ -1,55 +0,0 @@
-package errors
-
-import (
-	"fmt"
-	"log"
-	"os"
-
-	"github.com/coredns/coredns/core/dnsserver"
-	"github.com/coredns/coredns/middleware"
-
-	"github.com/mholt/caddy"
-)
-
-func init() {
-	caddy.RegisterPlugin("errors", caddy.Plugin{
-		ServerType: "dns",
-		Action:     setup,
-	})
-}
-
-func setup(c *caddy.Controller) error {
-	handler, err := errorsParse(c)
-	if err != nil {
-		return middleware.Error("errors", err)
-	}
-
-	handler.Log = log.New(os.Stdout, "", 0)
-
-	dnsserver.GetConfig(c).AddMiddleware(func(next middleware.Handler) middleware.Handler {
-		handler.Next = next
-		return handler
-	})
-
-	return nil
-}
-
-func errorsParse(c *caddy.Controller) (errorHandler, error) {
-	handler := errorHandler{}
-
-	for c.Next() {
-		args := c.RemainingArgs()
-		switch len(args) {
-		case 0:
-			handler.LogFile = "stdout"
-		case 1:
-			if args[0] != "stdout" {
-				return handler, fmt.Errorf("invalid log file: %s", args[0])
-			}
-			handler.LogFile = args[0]
-		default:
-			return handler, c.ArgErr()
-		}
-	}
-	return handler, nil
-}