ci: Fix shape and reformat free tensor handling in the input byte size check

[pskiran1]

What does the PR do?

• Updated the README with instructions on using the new is_non_linear_format_io flag in the model configuration.
• Added a test plan to the L0_model_config job to evaluate the is_non_linear_format_io flag.

Checklist

• PR title reflects the change and is of format <commit_type>: <Title>
• Changes are described in the pull request.
• Related issues are referenced.
• Populated github labels field
• Added test plan and verified test passes.
• Verified that the PR passes existing CI.
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• Added succinct git squash message before merging ref.
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Commit Type:

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• build
• ci
• docs
• feat
• fix
• perf
• refactor
• revert
• style
• test

Related PRs:

common: triton-inference-server/common#125
core: triton-inference-server/core#380
tensorrt_backend: triton-inference-server/tensorrt_backend#97

Where should the reviewer start?

Test plan:

• CI Pipeline ID: 16565646

Caveats:

Background

triton-inference-server/core#364

Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)

• closes GitHub issue: #xxx

[GuanLuo]

Can you add the shape / reformat-free test cases in the input byte size validation test?

[pskiran1]

Can you add the shape / reformat-free test cases in the input byte size validation test?

Added new test cases (shape / reformat-free input byte size validation) to L0_input_validationand L0_trt_reformat_free.