Move the needQuota processing to the prepareRequestContexts func #4126

Job	Run time
build	1m 50s
lint	52s
unit-tests	1m 28s
mongo-v0-ft-tests	11m 2s
file-ft-tests	12m 17s
kmip-ft-tests	1m 33s
ceph-backend-test	12m 12s
mongo-v1-ft-tests	10m 53s
multiple-backend	2m 11s
quota-tests (With Inflights, true)	1m 32s
utapi-v2-tests	1m 5s
quota-tests (Without Inflights, false)	1m 9s
	58m 4s

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