Add a volume to a group
zfs-backup-blob group add-volume [flags]
-g, --group string Volume group name (default "default") -h, --help help for add-volume --volume string Volume name (Example: pool/vol1)
-c, --configPath string Path to the config file (default "~/.bbackup.yaml") -l, --logLevel string LogLevel = debug|disabled (default "disabled")