2934: add crunch-dispatch default settings

Add default values to application.default.yml for:
* crunch_limit_log_events_per_job
* crunch_limit_log_event_bytes_per_job
* crunch_log_bytes_per_event
* crunch_log_seconds_between_events

Refs #2934.
Merge branch '2934-limit-crunch-logs-bugfix'

Refs #2934.