Move lookup of disable_maintenance to a parameter

Author: m0dular

manifests/init.pp

@@ -4,7 +4,9 @@
 
 class pe_databases (
   Boolean $manage_database_backups     = false,
+  # Manage the inclusion of the pg_repack class
   Boolean $manage_database_maintenance = true,
+  # Manage the state of the maintenance tasks, i.e. systemd services and timers
   Boolean $disable_maintenance         = lookup('pe_databases::disable_maintenance', {'default_value' => false}),
   Boolean $manage_postgresql_settings  = true,
   Boolean $manage_table_settings       = true,