Implement object deep inspector

[rikatz]

What this PR does / why we need it:

Implements deep inspection into objects, walking through all the spec (right now only for networking.Ingress) and checking for possible attempts to escape configs.

The annotation validation is still done in another part of the code and may be moved to the same inspector process in a future

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

How Has This Been Tested?

Added e2e tests and unit tests

[k8s-ci-robot]

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[tao12345666333]

/lgtm

Only a trivial comment. If you want to merge please unhold

/hold

[tao12345666333]

Maybe the name can be changed

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rikatz, tao12345666333

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[tao12345666333]

I think we can merge it first. Minor tweaks can be put into follow-up PRs

/hold cancel