Fix import path github.com/miekg/coredns -> github.com/coredns/coredns (#547)

This fix fixes import path from
`github.com/miekg/coredns`
->
`github.com/coredns/coredns`

middleware/rewrite/condition.go

@@ -5,7 +5,7 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/miekg/coredns/middleware/pkg/replacer"
+	"github.com/coredns/coredns/middleware/pkg/replacer"
 
 	"github.com/miekg/dns"
 )

middleware/rewrite/name.go

@@ -4,7 +4,7 @@ package rewrite
 import (
 	"strings"
 
-	"github.com/miekg/coredns/middleware"
+	"github.com/coredns/coredns/middleware"
 	"github.com/miekg/dns"
 )
 

middleware/rewrite/rewrite.go

@@ -2,7 +2,7 @@
 package rewrite
 
 import (
-	"github.com/miekg/coredns/middleware"
+	"github.com/coredns/coredns/middleware"
 	"github.com/miekg/dns"
 	"golang.org/x/net/context"
 )

middleware/rewrite/rewrite_test.go

@@ -3,9 +3,9 @@ package rewrite
 import (
 	"testing"
 
-	"github.com/miekg/coredns/middleware"
-	"github.com/miekg/coredns/middleware/pkg/dnsrecorder"
-	"github.com/miekg/coredns/middleware/test"
+	"github.com/coredns/coredns/middleware"
+	"github.com/coredns/coredns/middleware/pkg/dnsrecorder"
+	"github.com/coredns/coredns/middleware/test"
 
 	"github.com/miekg/dns"
 	"golang.org/x/net/context"

middleware/rewrite/setup.go

@@ -3,8 +3,8 @@ package rewrite
 import (
 	"log"
 
-	"github.com/miekg/coredns/core/dnsserver"
-	"github.com/miekg/coredns/middleware"
+	"github.com/coredns/coredns/core/dnsserver"
+	"github.com/coredns/coredns/middleware"
 
 	"github.com/mholt/caddy"
 )