Update ./hack/verify-docker-deps.sh script to validate dependencies on build platform

[pwschuurman]

What type of PR is this?

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/kind api-change
/kind bug
/kind cleanup
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it: Verify presubmit is currently failing (due to running on QEMU using target platform). This changes from using ldd on the target platform to using readelf on executables from the target image to validate dependencies exist in the base image.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[mattcary]

/lgtm
/approve

Nice binary scanning hackery!

[k8s-ci-robot]

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This pull-request has been approved by: mattcary, pwschuurman

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