Make tests safer to run in parallel by changing the Redis key namespa… #5569

Job	Run time
Skip Duplicate Jobs Pre Job	3s
Self-check on Python 3.8 - Python 3.8	8m 49s
Pack Tests - Python 3.8	2m 57s
Unit Tests (chunk 1) - Python 3.8	12m 45s
Lint Checks (black, flake8, etc.) - Python 3.8	2m 45s
Integration Tests (chunk 1) - Python 3.8	7m 57s
Unit Tests (chunk 2) - Python 3.8	10m 9s
Compile (pip deps, pylint, etc.) - Python 3.8	3m 52s
Integration Tests (chunk 2) - Python 3.8	8m 6s
Unit Tests (chunk 1) - Python 3.9	13m 5s
Lint Checks (black, flake8, etc.) - Python 3.9	2m 50s
Pack Tests - Python 3.9	2m 58s
Unit Tests (chunk 2) - Python 3.9	9m 51s
Compile (pip deps, pylint, etc.) - Python 3.9	4m 7s
Integration Tests (chunk 1) - Python 3.9	7m 45s
Integration Tests (chunk 2) - Python 3.9	8m 6s
Slack notification for failed master builds	5s
	1h 46m 10s

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