Specify using v1 Cloud Functions

[a-maurice]

Description

Provide details of the change, and generalize the change in the PR title above.

Firebase Functions now defaults to v2, but the test ones we have are still v1, so add the v1 suffix to keep them as working examples.

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Testing

Describe how you've tested these changes.

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Type of Change

Place an x the applicable box:

• Bug fix. Add the issue # below if applicable.
• New feature. A non-breaking change which adds functionality.
• Other, such as a build process or documentation change.

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