fixed wrong usage of find_in_batches --> oops
Optimize the way reports are being converted
Currently, the DB migration tasks load the entire reports table intomemory, this could be very diffuclt to do for a Foreman instance withmany records.
Fixes #405 and Fixes #349 - Adds support to 2.6.x reports
NOTE: Its recommended to Backup your DB prior to using this patch.