Migrating example to newer libraries

Signed-off-by: Frederick F. Kautz IV <fkautz@alumni.cmu.edu>

go.mod

@@ -3,14 +3,9 @@ module github.com/coredns/example
 go 1.12
 
 require (
-	github.com/coredns/coredns v1.4.0
-	github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
-	github.com/google/uuid v1.1.1 // indirect
-	github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645 // indirect
-	github.com/mholt/caddy v0.11.5
-	github.com/miekg/dns v1.1.6
-	github.com/opentracing/opentracing-go v1.1.0 // indirect
-	github.com/prometheus/client_golang v0.9.2
-	golang.org/x/net v0.0.0-20190328230028-74de082e2cca
-	google.golang.org/grpc v1.19.1 // indirect
+	github.com/caddyserver/caddy v1.0.1
+	github.com/coredns/coredns v1.5.2
+	github.com/miekg/dns v1.1.15
+	github.com/prometheus/client_golang v1.0.0
+	golang.org/x/net v0.0.0-20190628185345-da137c7871d7
 )

go.sum

@@ -1,55 +1,275 @@
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setup.go

@@ -5,7 +5,7 @@ import (
 	"github.com/coredns/coredns/plugin"
 	"github.com/coredns/coredns/plugin/metrics"
 
-	"github.com/mholt/caddy"
+	"github.com/caddyserver/caddy"
 )
 
 // init registers this plugin within the Caddy plugin framework. It uses "example" as the

setup_test.go

@@ -3,7 +3,7 @@ package example
 import (
 	"testing"
 
-	"github.com/mholt/caddy"
+	"github.com/caddyserver/caddy"
 )
 
 // TestSetup tests the various things that should be parsed by setup.