Update CCI commands for - OSC

[jenncarneiro]

Building off issue #101

Update all recipes as needed in the OSC folder

This is not urgent, but it'll make our work more readable.
Until recently, you had to use cci task run generate_and_load_from_yaml with a bunch of arguments to get snowfakery to work. Now, you can use cci task run snowfakery with a slightly different set of arguments. I think we should move all of our recipes (and especially newer/bigger ones) to the new snowfakery task. There's a line of instructions in most recipes

This is the line that needs to change, most of the time:

# cci task run generate_and_load_from_yaml -o generator_yaml snowfakery_samples/npsp/Affiliations_Account_npsp.recipe.yml -o num_records 10 -o num_records_tablename Contact --org dev

which should read

# cci task run snowfakery --recipe snowfakery_samples/npsp/Affiliations_Account_npsp.recipe.yml with argument mapping that I haven't done yet

update main documentation (testing instructions)
run cci task info snowfakery to get the new arguments
find & replace in files