Upgrade barman-cloud library to v0.5.1 which includes lz4 support for
base backups. Update CRD schema and manifest to expose lz4 as a valid
compression option, and clarify docs that lz4 is no longer WAL-only.
Closes#867
Signed-off-by: Marco Nenciarini <marco.nenciarini@enterprisedb.com>
Signed-off-by: Leonardo Cecchi <leonardo.cecchi@gmail.com>
Co-authored-by: Leonardo Cecchi <leonardo.cecchi@gmail.com>