harvest nanodqmio submitmultiple

Submitter for DQMIO conversion scripts

This script wraps conversion scripts (harvest_nanodqmio_to_*.py) in a job.
The difference with respect to harvest_nanodqmio_submit.py is that this script
makes it more easy to harvest multiple monitoring elements in one go
(instead of modifying and resubmitting harvest_nanodqmio_submit.py sequentially).

Run with python harvest_nanodqmio_submitmultiple.py -h for a list of available options.

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