go 1.17 has deprecated installing executables with go get

use go install instead

Author: eranco74

Makefile

@@ -161,7 +161,7 @@ envtest: ## Download envtest-setup locally if necessary.
 
 MOCKGEN = $(shell pwd)/bin/mockgen
 mockgen: ## Download mockgen locally if necessary.
-	$(call go-get-tool,$(MOCKGEN),github.com/golang/mock/mockgen)
+	$(call go-get-tool,$(MOCKGEN),github.com/golang/mock/mockgen@latest)
 
 GOLINT = $(shell pwd)/bin/golangci-lint
 golint: ## Download golangci-lint locally if necessary.
@@ -176,7 +176,7 @@ TMP_DIR=$$(mktemp -d) ;\
 cd $$TMP_DIR ;\
 go mod init tmp ;\
 echo "Downloading $(2)" ;\
-GOBIN=$(PROJECT_DIR)/bin go get $(2) ;\
+GOBIN=$(PROJECT_DIR)/bin go install $(2) ;\
 rm -rf $$TMP_DIR ;\
 }
 endef