Remove unused file_log_requests_config variable (#2140)
Remove unused file_log_requests_config variable (#2140)

Also add extra test to show the default log_request config when no file
is present.
eileencodes/puma,looker/puma,puma/puma,puma/puma,looker/puma,looker/puma,looker/puma,eileencodes/puma,eileencodes/puma,puma/puma,eileencodes/puma,puma/puma