Merge pull request #19844 from k8s-infra-cherrypick-robot/cherry-pick-19836-to-release-3.6

[release-3.6] make: upload partial coverage reports

Author: jmhbnz

Makefile

@@ -67,8 +67,11 @@ test-coverage:
 	COVERDIR=covdir PASSES="build cov" ./scripts/test.sh $(GO_TEST_FLAGS)
 
 .PHONY: upload-coverage-report
-upload-coverage-report: test-coverage
-	COVERDIR=covdir ./scripts/codecov_upload.sh
+upload-coverage-report:
+	return_code=0; \
+	$(MAKE) test-coverage || return_code=$$?; \
+	COVERDIR=covdir ./scripts/codecov_upload.sh; \
+	exit $$return_code
 
 .PHONY: fuzz
 fuzz: