hack/make/go: add -count 1 flag

Author: zchee

hack/make/go.mk

@@ -66,7 +66,7 @@ test: GO_BUILDTAGS+=${GO_BUILDTAGS_STATIC}
 test: GO_FLAGS+=-installsuffix ${GO_INSTALLSUFFIX_STATIC}
 test:  ## Runs package test including race condition.
 	$(call target)
-	@GO111MODULE=on $(GO_TEST) -v -race $(strip $(GO_FLAGS)) -run=$(GO_TEST_FUNC) $(GO_TEST_PKGS)
+	@GO111MODULE=on $(GO_TEST) -v -race -count 1 $(strip $(GO_FLAGS)) -run=$(GO_TEST_FUNC) $(GO_TEST_PKGS)
 
 .PHONY: bench
 bench: GO_LDFLAGS=${GO_LDFLAGS_STATIC}