Update Makefile to ignore go.mod during CI generate validation

Author: jasdel

Makefile

@@ -70,6 +70,7 @@ ci-test: generate unit-with-race-cover ci-test-generate-validate
 ci-test-generate-validate:
 	@echo "CI test validate no generated code changes"
 	git add . -A
+	git update-index --assume-unchanged go.mod go.sum
 	gitstatus=`git diff --cached --ignore-space-change`; \
 	echo "$$gitstatus"; \
 	if [ "$$gitstatus" != "" ]; then echo "$$gitstatus"; exit 1; fi