feat(scheduler): add built-in scenario generators #6193

Job	Run time
Check if build and test are required	4s
Build	10m 21s
Validate & Test	14m 30s
Skip Build and Test Message	-1s
FOSSA license check	1m 12s
Run E2E Upgrade Tests	7m 44s
Run E2E Tests	27m 0s
Code Coverage Report	0s
	1h 0m 50s

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