Define SF100k data set

[szarnyasg]

Our current largest data set is SF30k. We should introduce SF100k and set the number of persons to achieve the size of 100TiB (in CSVs).

[szarnyasg]

The trick to count the size of the data set is to use the s4cmd command-line tool:

$ s4cmd du -r \
    s3://${BUCKET_NAME}/results/${JOB_NAME}/runs/${RUN_TIMESTAMP}/social_network/graphs/csv/bi/composite-merged-fk/