remove references to govendor and vendorfmt

Makefile

@@ -20,12 +20,6 @@ GOVERSION = $(shell go version | awk '{print $$3;}')
 # GORELEASER is the path to the goreleaser binary.
 GORELEASER = $(shell which goreleaser)
 
-# GOVENDOR is the path to the govendor binary.
-GOVENDOR = $(shell which govendor)
-
-# VENDORFMT is the path to the vendorfmt binary.
-VENDORFMT = $(shell which vendorfmt)
-
 # pin versions for CI builds
 CI_CONSUL_VERSION=1.0.6
 CI_VAULT_VERSION=0.9.6
@@ -46,23 +40,13 @@ help:
 	@echo "clean     - remove temp files"
 
 # build compiles fabio and the test dependencies
-build: checkdeps vendorfmt gofmt
+build: gofmt
 	go build
 
 # test runs the tests
 test: build
 	go test -v -test.timeout 15s `go list ./... | grep -v '/vendor/'`
 
-# checkdeps ensures that all required dependencies are vendored in
-checkdeps:
-	[ -x "$(GOVENDOR)" ] || go get -u github.com/kardianos/govendor
-	govendor list +e | grep '^ e ' && { echo "Found missing packages. Please run 'govendor add +e'"; exit 1; } || : echo
-
-# vendorfmt ensures that the vendor/vendor.json file is formatted correctly
-vendorfmt:
-	[ -x "$(VENDORFMT)" ] || go get -u github.com/magiconair/vendorfmt/cmd/vendorfmt
-	vendorfmt
-
 # gofmt runs gofmt on the code
 gofmt:
 	gofmt -s -w `find . -type f -name '*.go' | grep -v vendor`
@@ -156,4 +140,4 @@ clean:
 	rm -rf pkg dist fabio
 	find . -name '*.test' -delete
 
-.PHONY: all build checkdeps clean codeship gofmt gorelease help homebrew install linux pkg preflight release tag test vendorfmt
+.PHONY: all build clean codeship gofmt gorelease help homebrew install linux pkg preflight release tag test

docs/content/contrib/guidelines.md

@@ -16,13 +16,8 @@ we ask for the following:
   already underway.
 * Only add libraries if they provide significant value. Consider copying the code
   (attribution) or writing it yourself.
-* Manage dependencies in the vendor path via `govendor` as separate commits per library
-  and format the `vendor.json` file with `vendorfmt`. Please make sure your commit
-  message has the following format:
-
-```
-Vendoring in version <git hash> of <pkgname>
-```
+* Manage dependencies with `go mod` and run `go mod vendor` afterwards to
+  sync the `vendor` folder for backwards compatibility.
 
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