Include `unit_tests` in `Manifest.get_resouce_fqns` #11688

Job	Run time
integration test metadata generation	1s
Test Log Schema (1)	3m 32s
Test Log Schema (2)	2m 48s
Test Log Schema (3)	3m 24s
Test Log Schema (4)	3m 31s
Test Log Schema (5)	3m 58s
Log Schema Test Suite	1s
	17m 15s

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