Update golangci-lint to v1.18.0

Makefile

@@ -51,7 +51,7 @@ MINIKUBE_RELEASES_URL=https://github.com/kubernetes/minikube/releases/download
 
 KERNEL_VERSION ?= 4.15
 # latest from https://github.com/golangci/golangci-lint/releases
-GOLINT_VERSION ?= v1.17.1
+GOLINT_VERSION ?= v1.18.0
 # Limit number of default jobs, to avoid the CI builds running out of memory
 GOLINT_JOBS ?= 4
 # see https://github.com/golangci/golangci-lint#memory-usage-of-golangci-lint
@@ -319,14 +319,15 @@ golint:
 gocyclo:
 	@gocyclo -over 15 `find $(SOURCE_DIRS) -type f -name "*.go"`
 
-out/linters/golangci-lint:
+out/linters/golangci-lint-$(GOLINT_VERSION):
 	mkdir -p out/linters
 	curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b out/linters $(GOLINT_VERSION)
+	mv out/linters/golangci-lint out/linters/golangci-lint-$(GOLINT_VERSION)
 
 # this one is meant for local use
 .PHONY: lint
-lint: pkg/minikube/assets/assets.go pkg/minikube/translate/translations.go out/linters/golangci-lint
-	./out/linters/golangci-lint run ${GOLINT_OPTIONS} ./...
+lint: pkg/minikube/assets/assets.go pkg/minikube/translate/translations.go out/linters/golangci-lint-$(GOLINT_VERSION)
+	./out/linters/golangci-lint-$(GOLINT_VERSION) run ${GOLINT_OPTIONS} ./...
 
 # lint-ci is slower version of lint and is meant to be used in ci (travis) to avoid out of memory leaks.
 .PHONY: lint-ci