Fix import ordering presubmit test (#4422)

Automatically submitted.

plugin/cache/item.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"github.com/coredns/coredns/plugin/cache/freq"
+
 	"github.com/miekg/dns"
 )
 

plugin/dnstap/handler_test.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/coredns/coredns/plugin/dnstap/msg"
 	test "github.com/coredns/coredns/plugin/test"
+
 	tap "github.com/dnstap/golang-dnstap"
 	"github.com/miekg/dns"
 )

plugin/dnstap/writer.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"github.com/coredns/coredns/plugin/dnstap/msg"
+
 	tap "github.com/dnstap/golang-dnstap"
 	"github.com/miekg/dns"
 )

plugin/kubernetes/parse.go

@@ -2,6 +2,7 @@ package kubernetes
 
 import (
 	"github.com/coredns/coredns/plugin/pkg/dnsutil"
+
 	"github.com/miekg/dns"
 )
 

plugin/normalize.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 
 	"github.com/coredns/coredns/plugin/pkg/parse"
+
 	"github.com/miekg/dns"
 )
 

plugin/pkg/trace/trace.go

@@ -2,6 +2,7 @@ package trace
 
 import (
 	"github.com/coredns/coredns/plugin"
+
 	ot "github.com/opentracing/opentracing-go"
 )