Update IVF_PQ to use temp directory pattern to support parallel ingestion #1656

Job	Run time
run-tests (ubuntu-latest, 3.9)	25m 5s
run-tests (ubuntu-latest, 3.9)	25m 5s
run-tests (ubuntu-latest, 3.9)	25m 5s
run-tests (ubuntu-latest, 3.9)	25m 5s
run-tests-numpy-1 (ubuntu-latest, 3.9)	29m 19s
run-tests-numpy-1 (ubuntu-latest, 3.9)	24m 40s
run-tests-numpy-1 (ubuntu-latest, 3.9)	29m 15s
run-tests-numpy-1 (ubuntu-latest, 3.9)	30m 33s
	3h 34m 7s

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