Add some unit tests for tuf/utils/utils.go This PR is about adding some unit tests for tuf/utils/utils.go.
Add some unit tests for tuf/utils/utils.go
This PR is about adding some unit tests for tuf/utils/utils.go.

Signed-off-by: Hu Shuai <a4797ccdc3c71d8ffc5c17a5bb7f114e3818f278@cn.fujitsu.com>

docker/notary,docker/notary,HuKeping/notary,HuKeping/notary,docker/notary,HuKeping/notary