noticed 'beta_eps' param should be 'beta_epsilon'. Also updated some of the rand param choices to cover current range of choices for some of the newer params.
Merge branch 'master' of github.com:0xdata/h2o
reduce to 1000 and 2000 multi-file parse, to see if ec2 will pass
when writing out a csv file (downloadCsv) h2o writes time data as the internal format number, rather than time like the source. that means the value_size_bytes and row_size will differ when re-parsing that csv (compared to to the original. Don't check.
since we remove the source key now after parse, if we're iterating re-parsing the source key, we also have to redo the import folder, to get the source key back in (used to import outside the loop).