chore: Pass driver-repo as input for 3rd-party platform test task

[adambollen]

Description

Just a quick change in response to https://github.com/fauna/testtools/pull/116 for the 3rd-party platform testing.

Motivation and context

BT-4442 (still)

How was the change tested?

Need to iterate through Concourse

Screenshots (if appropriate):

Change types

• • [ ] Bug fix (non-breaking change that fixes an issue)
• • [ ] New feature (non-breaking change that adds functionality)
• • [ ] Breaking change (backwards-incompatible fix or feature)

Checklist:

• • [ ] My code follows the code style of this project.
• • [ ] My change requires a change to Fauna documentation.
• • [ ] My change requires a change to the README, and I have updated it accordingly.

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