Remove localkube from bindata

This makes the minikube build simpler and the the binary smaller.
Localkube will always be remotely fetched and locally cached on the
host.

Makefile

@@ -32,6 +32,8 @@ ISO_BUCKET ?= minikube/iso
 GOOS ?= $(shell go env GOOS)
 GOARCH ?= $(shell go env GOARCH)
 BUILD_DIR ?= ./out
+$(shell mkdir -p $(BUILD_DIR))
+
 ORG := k8s.io
 REPOPATH ?= $(ORG)/minikube
 
@@ -53,11 +55,9 @@ LOCALKUBEFILES := GOPATH=$(GOPATH) go list  -f '{{join .Deps "\n"}}' ./cmd/local
 MINIKUBEFILES := GOPATH=$(GOPATH) go list  -f '{{join .Deps "\n"}}' ./cmd/minikube/ | grep k8s.io | GOPATH=$(GOPATH) xargs go list -f '{{ range $$file := .GoFiles }} {{$$.Dir}}/{{$$file}}{{"\n"}}{{end}}'
 HYPERKIT_FILES :=  GOPATH=$(GOPATH) go list  -f '{{join .Deps "\n"}}' k8s.io/minikube/cmd/drivers/hyperkit | grep k8s.io | GOPATH=$(GOPATH) xargs go list -f '{{ range $$file := .GoFiles }} {{$$.Dir}}/{{$$file}}{{"\n"}}{{end}}'
 
-KVM_DRIVER_FILES := $(shell go list -f '{{join .Deps "\n"}}' ./cmd/drivers/kvm/ | grep k8s.io | xargs go list -f '{{ range $$file := .GoFiles }} {{$$.Dir}}/{{$$file}}{{"\n"}}{{end}}')
+MINIKUBE_TEST_FILES := go list -f '{{ if .TestGoFiles }} {{.ImportPath}} {{end}}' ./... | grep k8s.io | GOPATH=$(GOPATH) xargs go list -f '{{ range $$file := .GoFiles }} {{$$.Dir}}/{{$$file}}{{"\n"}}{{end}}'
 
-MINIKUBE_ENV_linux  		:= CGO_ENABLED=1 GOARCH=amd64 GOOS=linux
-MINIKUBE_ENV_darwin  		:= CGO_ENABLED=1 GOARCH=amd64 GOOS=darwin
-MINIKUBE_ENV_windows 		:= CGO_ENABLED=0 GOARCH=amd64 GOOS=windows
+KVM_DRIVER_FILES := $(shell go list -f '{{join .Deps "\n"}}' ./cmd/drivers/kvm/ | grep k8s.io | xargs go list -f '{{ range $$file := .GoFiles }} {{$$.Dir}}/{{$$file}}{{"\n"}}{{end}}')
 
 # extra env vars that need to be set in cross build container
 MINIKUBE_ENV_darwin_DOCKER 	:= CC=o64-clang CXX=o64-clang++
@@ -70,7 +70,7 @@ KUBE_CROSS_DOCKER_CMD := docker run -w /go/src/$(REPOPATH) --user $(shell id -u)
 
 # $(call MINIKUBE_GO_BUILD_CMD, output file, OS)
 define MINIKUBE_GO_BUILD_CMD
-	$(MINIKUBE_ENV_$(2)) go build -tags "$(MINIKUBE_BUILD_TAGS)" --installsuffix cgo -ldflags="$(MINIKUBE_LDFLAGS) $(K8S_VERSION_LDFLAGS)" -a -o $(1) k8s.io/minikube/cmd/minikube
+	GOOS=$(2) go build -tags "$(MINIKUBE_BUILD_TAGS)" --installsuffix cgo -ldflags="$(MINIKUBE_LDFLAGS) $(K8S_VERSION_LDFLAGS)" -a -o $(1) k8s.io/minikube/cmd/minikube
 endef
 
 ifeq ($(BUILD_IN_DOCKER),y)
@@ -179,7 +179,7 @@ integration-versioned: out/minikube
 	go test -v -test.timeout=30m $(REPOPATH)/test/integration --tags="$(MINIKUBE_INTEGRATION_BUILD_TAGS) versioned" $(TEST_ARGS)
 
 .PHONY: test
-test: pkg/minikube/assets/assets.go
+test: $(shell $(MINIKUBE_TEST_FILES)) pkg/minikube/assets/assets.go
 	./test.sh
 
 .PHONY: gopath
@@ -188,8 +188,8 @@ ifneq ($(GOPATH)/src/$(REPOPATH),$(PWD))
 	$(warning Warning: Building minikube outside the GOPATH, should be $(GOPATH)/src/$(REPOPATH) but is $(PWD))
 endif
 
-pkg/minikube/assets/assets.go: out/localkube $(GOPATH)/bin/go-bindata $(shell find deploy/addons -type f)
-	$(GOPATH)/bin/go-bindata -nomemcopy -o pkg/minikube/assets/assets.go -pkg assets ./out/localkube deploy/addons/...
+pkg/minikube/assets/assets.go: $(GOPATH)/bin/go-bindata $(shell find deploy/addons -type f)
+	$(GOPATH)/bin/go-bindata -nomemcopy -o pkg/minikube/assets/assets.go -pkg assets deploy/addons/...
 
 $(GOPATH)/bin/go-bindata:
 	GOBIN=$(GOPATH)/bin go get github.com/jteeuwen/go-bindata/...
@@ -255,9 +255,9 @@ out/minikube-installer.exe: out/minikube-windows-amd64.exe
 
 out/docker-machine-driver-hyperkit: $(shell $(HYPERKIT_FILES))
 ifeq ($(MINIKUBE_BUILD_IN_DOCKER),y)
-	$(MINIKUBE_DOCKER_CMD) '$(MINIKUBE_ENV_darwin_DOCKER) $(MINIKUBE_ENV_darwin) go build -o $(BUILD_DIR)/docker-machine-driver-hyperkit k8s.io/minikube/cmd/drivers/hyperkit'
+	$(MINIKUBE_DOCKER_CMD) '$(MINIKUBE_ENV_darwin_DOCKER) GOOS=darwin go build -o $(BUILD_DIR)/docker-machine-driver-hyperkit k8s.io/minikube/cmd/drivers/hyperkit'
 else
-	$(MINIKUBE_ENV_darwin) go build -o $(BUILD_DIR)/docker-machine-driver-hyperkit k8s.io/minikube/cmd/drivers/hyperkit
+	GOOS=darwin go build -o $(BUILD_DIR)/docker-machine-driver-hyperkit k8s.io/minikube/cmd/drivers/hyperkit
 endif
 
 .PHONY: install-hyperkit-driver

pkg/minikube/bootstrapper/localkube/localkube.go

@@ -116,14 +116,10 @@ func (lk *LocalkubeBootstrapper) UpdateCluster(config bootstrapper.KubernetesCon
 	var err error
 
 	//add url/file/bundled localkube to file list
-	if localkubeURIWasSpecified(config) && config.KubernetesVersion != constants.DefaultKubernetesVersion {
-		lCacher := localkubeCacher{config}
-		localkubeFile, err = lCacher.fetchLocalkubeFromURI()
-		if err != nil {
-			return errors.Wrap(err, "Error updating localkube from uri")
-		}
-	} else {
-		localkubeFile = assets.NewBinDataAsset("out/localkube", "/usr/local/bin", "localkube", "0777")
+	lCacher := localkubeCacher{config}
+	localkubeFile, err = lCacher.fetchLocalkubeFromURI()
+	if err != nil {
+		return errors.Wrap(err, "Error updating localkube from uri")
 	}
 	copyableFiles = append(copyableFiles, localkubeFile)
 

test.sh

@@ -32,7 +32,7 @@ COV_TMP_FILE=coverage_tmp.txt
 # Run "go test" on packages that have test files.  Also create coverage profile
 echo "Running go tests..."
 cd ${GOPATH}/src/${REPO_PATH}
-rm -f out/$COV_FILE
+rm -f out/$COV_FILE || true
 echo "mode: count" > out/$COV_FILE
 for pkg in $(go list -f '{{ if .TestGoFiles }} {{.ImportPath}} {{end}}' ./...); do
     go test -tags "container_image_ostree_stub containers_image_openpgp" -v $pkg -covermode=count -coverprofile=out/$COV_TMP_FILE