Separate test/dev requirements from production requirements in edx-platform

Description

We should split the test-only requirements out into a separate file.

Steps to Reproduce

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Current Behavior

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Expected Behavior

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Reason for Variance

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Release Notes

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User Impact Summary

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Assignee

Unassigned

Reporter

Calen Pennington

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Actual Points

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Category of Work

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Platform Map Area (Levels 1 & 2)

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Platform Map Area (Levels 3 & 4)

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Priority

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