exclusions are already updated dynamically if crawler pod is running,
but when crawler pod is restarted, this ensures new exclusions are also
picked up:
- mount configmap in separate path, avoiding subPath, to allow dynamic
updates of mounted volume
- adds a lastConfigUpdate timestamp to CrawlJob - if lastConfigUpdate in
spec is different from current, the configmap is recreated by operator
- operator: also update image from channel avoid any issues with
updating crawler in channel
- only updates for exclusion add/remove so far, can later be expanded to
other crawler settings (see: #2355 for broader running crawl config
updates)
- fixes#2408