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, 38 deletions

diff --git a/middleware/file/closest_test.go b/middleware/file/closest_test.go
deleted file mode 100644
index b37495493..000000000
--- a/middleware/file/closest_test.go
+++ /dev/null
@@ -1,38 +0,0 @@
-package file
-
-import (
-	"strings"
-	"testing"
-)
-
-func TestClosestEncloser(t *testing.T) {
-	z, err := Parse(strings.NewReader(dbMiekNL), testzone, "stdin", 0)
-	if err != nil {
-		t.Fatalf("expect no error when reading zone, got %q", err)
-	}
-
-	tests := []struct {
-		in, out string
-	}{
-		{"miek.nl.", "miek.nl."},
-		{"www.miek.nl.", "www.miek.nl."},
-
-		{"blaat.miek.nl.", "miek.nl."},
-		{"blaat.www.miek.nl.", "www.miek.nl."},
-		{"www.blaat.miek.nl.", "miek.nl."},
-		{"blaat.a.miek.nl.", "a.miek.nl."},
-	}
-
-	for _, tc := range tests {
-		ce, _ := z.ClosestEncloser(tc.in)
-		if ce == nil {
-			if z.origin != tc.out {
-				t.Errorf("Expected ce to be %s for %s, got %s", tc.out, tc.in, ce.Name())
-			}
-			continue
-		}
-		if ce.Name() != tc.out {
-			t.Errorf("Expected ce to be %s for %s, got %s", tc.out, tc.in, ce.Name())
-		}
-	}
-}