Fix crawl result logs (#134)

Fix the crawl result log to correctly display `success` when no purge
crawl was required.

- Update crawl stage status when skipping purge crawls
- Log correct outcome message in final log

lib/crawler/api/crawl.rb

@@ -141,7 +141,7 @@ def record_overall_outcome(results)
  end
 
  outcome = combined_outcome(results)
- message = "#{results[:primary][:message]} | #{results[:purge][:outcome]}"
+ message = "#{results[:primary][:message]} | #{results[:purge][:message]}"
  record_outcome(outcome:, message:)
  end
 

lib/crawler/coordinator.rb

@@ -99,6 +99,8 @@ def run_purge_crawl!
 
  if purge_urls.empty?
  system_logger.info('No documents were found for the purge crawl. Skipping purge crawl.')
+ set_outcome(:success, "Skipped #{@crawl_stage} crawl as no outdated documents were found.")
+ log_crawl_end_event
  return
  end