The restore manager used a hardcoded scheme registration that ignored
CUSTOM_CNPG_GROUP and CUSTOM_CNPG_VERSION, causing restore jobs to fail
under non-standard CNPG API groups.
Extract `generateScheme()` into `common.GenerateScheme()` and use it
from both instance and restore managers.
Signed-off-by: Armando Ruocco <armando.ruocco@enterprisedb.com>
Signed-off-by: Marco Nenciarini <marco.nenciarini@enterprisedb.com>
Co-authored-by: Marco Nenciarini <marco.nenciarini@enterprisedb.com>
