v0.4.0

This release makes some spec renaming changes.
Upgrade is possible. But it is highly recommended to make a backup before upgrade.
After upgrade, please rename the spec and secret fields according to following notes.

BREAKING CHANGE: Re-naming of TLS spec and TLS secrets' fields.

TLS spec:

• member's clientSecret is changed to serverSecret

TLS secrets:

• member's peerSecret's fields change:
  • peer-crt.pem -> peer.crt
  • peer-key.pem -> peer.key
  • peer-ca-crt.pem -> peer-ca.crt
• member's clientSecret is changed to serverSecret, its fields change:
  • client-crt.pem -> server.crt
  • client-key.pem -> server.key
  • client-ca-crt.pem -> server-ca.crt
• operatorSecret's fields change:
  • etcd-crt.pem -> etcd-client.crt
  • etcd-key.pem -> etcd-client.key
  • etcd-ca-crt.pem -> etcd-client-ca.crt

BREAKING CHANGE: Backup spec: CleanupBackupsOnClusterDelete field is renamed to AutoDelete.

Previous spec like this one

spec:
  backup:
    storageType: "PersistentVolume"
    ...
    cleanupBackupsOnClusterDelete: true

should be changed to

spec:
  backup:
    storageType: "PersistentVolume"
    ...
    autoDelete: true