mechanical changes (#3481)

* make -f Makefile.doc
* go mod tidy
* go generate

trying to prevent another dirty build/release.
Signed-off-by: Miek Gieben <miek@miek.nl>

go.mod

@@ -4,13 +4,11 @@ go 1.12
 
 require (
 	cloud.google.com/go v0.41.0 // indirect
-	github.com/Azure/azure-sdk-for-go v31.1.0+incompatible
+	github.com/Azure/azure-sdk-for-go v32.4.0+incompatible
 	github.com/Azure/go-autorest/autorest v0.9.2
 	github.com/Azure/go-autorest/autorest/azure/auth v0.4.0
-	github.com/Azure/go-autorest/autorest/to v0.2.0 // indirect
 	github.com/DataDog/datadog-go v2.2.0+incompatible // indirect
 	github.com/Shopify/sarama v1.21.0 // indirect
-	github.com/apache/thrift v0.12.0 // indirect
 	github.com/aws/aws-sdk-go v1.25.36
 	github.com/caddyserver/caddy v1.0.4
 	github.com/coredns/federation v0.0.0-20190818181423-e032b096babe
@@ -22,11 +20,9 @@ require (
 	github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef // indirect
 	github.com/golang/protobuf v1.3.2
 	github.com/googleapis/gnostic v0.2.0 // indirect
-	github.com/gophercloud/gophercloud v0.0.0-20190307220656-fe1ba5ce12dd // indirect
 	github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645
 	github.com/imdario/mergo v0.3.7 // indirect
 	github.com/infobloxopen/go-trees v0.0.0-20190313150506-2af4e13f9062
-	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1
 	github.com/miekg/dns v1.1.22
 	github.com/opentracing-contrib/go-observer v0.0.0-20170622124052-a52f23424492 // indirect

man/coredns-clouddns.7

 .\" Generated by Mmark Markdown Processer - mmark.miek.nl
-.TH "COREDNS-CLOUDDNS" 7 "September 2019" "CoreDNS" "CoreDNS Plugins"
+.TH "COREDNS-CLOUDDNS" 7 "November 2019" "CoreDNS" "CoreDNS Plugins"
 
 .SH "NAME"
 .PP
@@ -76,7 +76,7 @@ Enable clouddns with fallthrough:
 
 .nf
 example.org {
-    clouddns example.org.:gcp\-example\-project:example\-zone clouddns example.com.:gcp\-example\-project:example\-zone\-2 {
+    clouddns example.org.:gcp\-example\-project:example\-zone example.com.:gcp\-example\-project:example\-zone\-2 {
         fallthrough example.gov.
     }
 }

man/coredns-sign.7

 .\" Generated by Mmark Markdown Processer - mmark.miek.nl
-.TH "COREDNS-SIGN" 7 "October 2019" "CoreDNS" "CoreDNS Plugins"
+.TH "COREDNS-SIGN" 7 "November 2019" "CoreDNS" "CoreDNS Plugins"
 
 .SH "NAME"
 .PP