fix(sdk): Verify binary data in step copy-results-artifacts. Fixes #984

[maxdebayser]

Which issue is resolved by this Pull Request:
Resolves #984

Description of your changes:

Add a verification to copy-results-artifacts to prevent small binary files from being copied. The presence of unprintable characters in the PipelineRun status breaks the UpdateRun function in run_store.go

The verification with awk is compatible with the busybox container.

Environment tested:

• Python Version (use python --version): 3.8
• Tekton Version (use tkn version): 1.5
• Kubernetes Version (use kubectl version): v1.23.5
• OS (e.g. from /etc/os-release): Fedora 35

[google-cla]

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[Tomcli]

Hi @maxdebayser, can your run make unit_test GENERATE_GOLDEN_YAML=True with the new python sdk code to regenerate the unit test yaml? So it can pass our github action tests

[Tomcli]

/lgtm
@maxdebayser once you signed the cla, please let me know so I can retrigger the cla check.

[maxdebayser]

@Tomcli , now when I visit https://cla.developers.google.com/ it says I'm covered by Google Corporate CLA. Is that all or do I have to do something more?

[Tomcli]

@maxdebayser based on https://github.com/kubeflow/kfp-tekton/pull/985/checks?check_run_id=7219006673
Seems like one of your commit is not using the email with signed CLA. Maybe you can squash your commits into one?

[maxdebayser]

@Tomcli I've verified that my IBM e-mail address is set in my commits. I've also added my IBM e-mail as a secondary to may github.com account. And now I've also clicked on "New Contributors: Update this check after signing the CLA by clicking [here]" link in the CLA check message. Apparently it's passing now.

[Tomcli]

thanks @maxdebayser
/approve

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: maxdebayser, Tomcli

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