Converted set-cicd-flag to a YAML template with inline script

[awkwardindustries]

All Submissions:

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• Have you followed the guidelines in our Contributing document?
• Have you added an explanation of what your changes do and why you'd like us to include them?
• [N/A] I have updated the documentation accordingly.
• [N/A] I have added tests to cover my changes.
• All new and existing tests passed.
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What is the current behavior?

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Refer to epic #298 to understand current behavior.

Issue Number: Closes #323

What is the new behavior?

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Scripted work inlined in reusable YAML template to better support version 'n' go process.

Does this introduce a breaking change?

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• [NO]

It will change the Build job names from "Determine if <TEMPLATE_NAME> needs CI" to "Determine if <TEMPLATE_NAME> needs CI/CD" and Release job names from "Determine if <TEMPLATE_NAME> needs CD" to "Determine if <TEMPLATE_NAME> needs CI/CD", but this should not be a breaking change as no subsequent jobs/steps depend upon job name.

Any relevant logs, error output, etc?

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Other information

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Successful test run: