Logging: silence verbose libraries in client script logs
Logging: silence verbose libraries in client script logs

Convert get_script_logger to use a dict for config. Keep formatters/handler
and loggers for passed-in root ('archivematica') and script logger.  Add a
root logger that only logs WARNING and higher from other libraries.

Notably this silences elasticsearch's verbose INFO logs.

artefactual/archivematica,sevein/archivematica,sevein/archivematica,eckardm/archivematica,sevein/archivematica,artefactual/archivematica,artefactual/archivematica,eckardm/archivematica,sevein/archivematica,eckardm/archivematica,artefactual/archivematica,eckardm/archivematica