Edge-home-orchestration-go: [Secure] Local Image Execution

@t25kim In secure mode, we cannot run unknown containers (without a DIGEST)

@tdrozdovsky Thank you for the prompt answer!
Do you think HomeEdge doesn't need to run local images for the developers?
I think it might be good for developers to have the method to enable or disable the verifier in secure mode.

@t25kim There is a normal mode (without security) for developers. We cannot allow containers to run without a DIGEST. But in the future, when we add a digital signature of containerWhiteList, we can consider this option.

@tdrozdovsky I thought there might be a developer wants to test his dev container in local PC with HTTPS and RBAC. Just my 2 cents. 😁