create script to validate kernel options across architectures

[jodh-intel]

As we now support multiple architectures and each architecture requires a kernel config file, we need a way to ensure that all the architecture config files contain the "minimal" set of config options that will allow a Kata Container to be created.

There is bound to be some variation in config options for each architecture, but we need a way to be able to see those changes easily so they can be validated (as PRs are raised to update the kernel configs for example).