This PR addresses a possible failure when Redis pod was inaccessible
from Crawler pod.
- Ensure crawl is set to 'waiting_for_capacity' if either no crawler
pods are available or no redis pod. previously, missing/inaccessible
redis would not result in 'waiting_for_capacity' if crawler pods are
available
- Rework logic: if no crawler and redis after >60 seconds, shutdown
redis. if crawler and no redis, init (or reinit) redis
- track 'lastUpdatedTime' in db when incrementing exec time to avoid
double counting if lastUpdatedTime has not changed, eg. if operator sync
fails.
- add redis timeout of 20 seconds to avoid timing out operator responses
if redis conn takes too long, assume unavailable
0653657637