Change make test-unit to have the same go test parameters as make test-in-docker

`make test-in-docker` was changed to disable the printf analyzer, but
`make test-unit` wasn't for some reason. The current master isn't
compatible with the printf analyzer, so `make test-unit` fails on master
without this change.

Author: towca

cluster-autoscaler/Makefile

@@ -58,7 +58,7 @@ test-build-tags:
 	done
 
 test-unit: clean build
-	go test --test.short -race ./... ${TAGS_FLAG}
+	go test --test.short -race ./... -vet="${GO_TEST_DEFAULT_ANALYZERS}" ${TAGS_FLAG}
 
 dev-release: dev-release-arch-$(GOARCH)