fix(cache): make dynamoDB aware of orignal/deduped blobs #800

Job	Run time
GC(with referrers) on filesystem with short interval	9m 57s
GC(with referrers) on filesystem with short interval	9m 57s
GC(with referrers) on filesystem with short interval	9m 23s
GC(with referrers) on filesystem with short interval	10m 0s
GC(with referrers) on filesystem with short interval	10m 0s
GC(with referrers) on filesystem with short interval	8m 37s
GC(with referrers) on S3(minio) with short interval	27m 25s
GC(with referrers) on S3(minio) with short interval	27m 25s
GC(with referrers) on S3(minio) with short interval	25m 52s
GC(with referrers) on S3(minio) with short interval	33m 2s
GC(with referrers) on S3(minio) with short interval	33m 2s
GC(with referrers) on S3(minio) with short interval	14m 6s
GC(without referrers) on filesystem with short interval	15m 50s
GC(without referrers) on filesystem with short interval	15m 50s
GC(without referrers) on filesystem with short interval	10m 2s
GC(without referrers) on filesystem with short interval	8m 39s
GC(without referrers) on filesystem with short interval	8m 39s
GC(without referrers) on filesystem with short interval	10m 19s
GC(without referrers) on S3(minio) with short interval	42m 2s
GC(without referrers) on S3(minio) with short interval	27m 23s
GC(without referrers) on S3(minio) with short interval	28m 1s
GC(without referrers) on S3(minio) with short interval	30m 53s
GC(without referrers) on S3(minio) with short interval	33m 20s
GC(without referrers) on S3(minio) with short interval	29m 8s
	7h 58m 52s

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