Ingest workflow logger data from application logs

[niallmcc]

When logging in realtime to postgres isn't possible, another option is to write entries to the application's log file and later, ingest the entries from the log file(s) into the database, using log_ingestor.py

Example usage:

python log_ingestor.py --verbose /tmp/test1/*.log

Where log files contain WFL entries starting with a WFL_START token

... WFL_START <user_id> | <hostname> | <workflow> | <tag> | <stage_number> | <stage> | <iteration> | <date_time> | <flag> | <comment>

For example:

Lorem Ipsum etc ... WFL_START fred | compute1 | modeler.py | v14.3 | 2 | model | 1 | 2022-01-01 12:23:05.927111 |Comment| 10

[agstephens]

@niallmcc: what an excellent idea. I've merged.