* lifecycle: move s3 backup settings to s3 name
* providers/oauth2: fix for alerting for missing certificatekeypair
* lifecycle: add backup commands
see #252
* lifecycle: install postgres-client for 11 and 12
* root: migrate to DBBACKUP_STORAGE_OPTIONS, add region setting
* lifecycle: auto-clean last backups
* helm: add s3 region parameter, add cronjob for backups
* docs: add backup docs
* root: remove backup scheduled task for now
