This is an oversight from bbe0a81d, where the equivalent option exists
in pg_dump.  This is useful to be able to reset the compression methods
cluster-wide when restoring the data based on default_toast_compression.

Reviewed-by: Daniel Gustafsson, Tom Lane
Discussion: https://postgr.es/m/YKHC+qCJvzCRVCpY@paquier.xyz