Fix linter

[mjudeikis]

Add proper linter to make file and re-enable make lint\

lint: $(STATICCHECK_BINARY)
	@echo 'go vet $(GO_PKGS)'
	@vet_res=$$(GO111MODULE=on go vet $(GO_PKGS) 2>&1); if [ -n "$$vet_res" ]; then \
		echo ""; \
		echo "Go vet found issues. Please check the reported issues"; \
		echo "and fix them if necessary before submitting the code for review:"; \
		echo "$$vet_res"; \
		exit 1; \
	fi
	@echo '$(STATICCHECK_BINARY) $(GO_PKGS)'
	@lint_res=$$($(STATICCHECK_BINARY) $(GO_PKGS)); if [ -n "$$lint_res" ]; then \
		echo ""; \
		echo "Staticcheck found style issues. Please check the reported issues"; \
		echo "and fix them if necessary before submitting the code for review:"; \
		echo "$$lint_res"; \
		exit 1; \
	fi
	@echo 'gofmt -d -s $(GO_FILES)'
	@fmt_res=$$(gofmt -d -s $(GO_FILES)); if [ -n "$$fmt_res" ]; then \
		echo ""; \
		echo "Gofmt found style issues. Please check the reported issues"; \
		echo "and fix them if necessary before submitting the code for review:"; \
		echo "$$fmt_res"; \
		exit 1; \
	fi