Validate gencerts command produces usable artifacts

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Openbazaar-go has a subcommand called gencerts which produces X509 key pairs for SSL use. We need to validate that these certs work for the bundle as well as the standalone daemon/client configurations. The deliverables here are the steps used to validate the certs on each OS.

OS to validate use case:

• Windows
• Ubuntu
• Mac

Once validation steps are known, we can update the docs appropriately: #1296