Ref. Symptoms / observations / job analysis feature

Context: This step focuses on automating the process of applying symptom labels to job runs when they are finished running. This part extends previous work that identified symptoms and applied labels in LoadJobRunData.
 
Action Items:

During the fetchdata CronJob, read the labels applied in BQ and include them in the job run "labels" array entry. This should be reusable code for updates when labels are applied or removed retroactively.