Minor test target fixes (#3801)

* Minor test target fixes

* add test tag

Author: yux0

Makefile

@@ -260,7 +260,7 @@ build-tests:
 
 unit-test: clean-test-results
 	@printf $(COLOR) "Run unit tests..."
-	@go test $(UNIT_TEST_DIRS) -timeout=$(TEST_TIMEOUT) $(TEST_DIRS) -race | tee -a test.log
+	@go test $(UNIT_TEST_DIRS) -timeout=$(TEST_TIMEOUT) $(TEST_TAG) -race | tee -a test.log
 	@! grep -q "^--- FAIL" test.log
 
 integration-test: clean-test-results
@@ -293,7 +293,7 @@ $(COVER_ROOT):
 unit-test-coverage: $(COVER_ROOT)
 	@printf $(COLOR) "Run unit tests with coverage..."
 	@echo "mode: atomic" > $(UNIT_COVER_PROFILE)
-	@go test ./$(UNIT_TEST_DIRS) -timeout=$(TEST_TIMEOUT) -race -tags=unittest -coverprofile=$(UNIT_COVER_PROFILE) || exit 1;
+	@go test ./$(UNIT_TEST_DIRS) -timeout=$(TEST_TIMEOUT) -race $(TEST_TAG) -coverprofile=$(UNIT_COVER_PROFILE) || exit 1;
 
 integration-test-coverage: $(COVER_ROOT)
 	@printf $(COLOR) "Run integration tests with coverage..."