[etcd-druid]

✨ New Features

[USER] Configure auto-compaction policy for etcd and backup sidecar's embedded etcd via Etcd resource via .spec.sharedConfig.autoCompactionMode and .spec.sharedConfig.autoCompactionRetention. (#157, @ishan16696)
[OPERATOR] Etcd bootstrap script now resides in the custom etcd image instead of being mounted as a configmap. (#162, @shreyas-s-rao)

[OPERATOR] If an etcd StatefulSet remains pending, warning events of unbound PVCs are now added to the .status.lastError of the etcd resource. This makes it easier for operators to spot potential issues. (#146, @timuthy)
[OPERATOR] Snapshot compression specification can be configured through helm-charts as well as etcd resource spec configuration file. (#138, @ishan16696)

[USER] Moved parts of reconciliation for ETCD status that deals with Statefulset to a separate controller. (#133, @abdasgupta)

[USER] Added CLI flags --auto-compaction-mode and --auto-compaction-retention to configure auto-compaction for embedded etcd. Default values: auto-compaction-mode="periodic" and auto-compaction-retention="30m" (gardener/etcd-backup-restore#315, @ishan16696)
[OPERATOR] Added a new metric etcdbr_snapshotter_failure used as a blanket metric to capture any snapshotter error. (gardener/etcd-backup-restore#326, @aaronfern)
[OPERATOR] etcdbr-compression specification can be configured through helm-charts. (gardener/etcd-backup-restore#307, @ishan16696)
[OPERATOR] Added CLI-flags (max-call-send-message-size, max-request-bytes and max-txn-ops) to enable restoration for delta snapshots with large amount of data (large number of events or events with large data). (gardener/etcd-backup-restore#282, @abdasgupta)

[USER] Move bootstrap script out of the helm chart, as it will now be part of the etcd-custom-image. (gardener/etcd-backup-restore#327, @shreyas-s-rao)
[USER] Add support for snapshot compression/decompression. Compression and compression policy can be configured through flags: --compress-snapshots and --compression-policy respectively. Supported compression policies currently are gzip (default), lzw and zlib. Snapshot compression is disabled by default. (gardener/etcd-backup-restore#293, @ishan16696)