Add test case to cover non-empty auth entry
Add test case to cover non-empty auth entry

Signed-off-by: Jon Johnson <2c8db69aba113df2d175af2fe7435502fb5dc9f9@google.com>

cpuguy83/cli,thaJeztah/cli,docker/cli,thaJeztah/cli,cpuguy83/cli,docker/cli