Unexported fields should be ignored when mapping structs from Golang to mcl, as this avoids issues where certain structs cannot be used in mcl representation due to their structure that may be incompatible with conversion. Disallowing private fields allows those to still be included in the struct but ignored when mapping the types, allowing the mcl representation of the type to stil be valid Resolves: https://github.com/purpleidea/mgmt/issues/684 Signed-off-by: Joe Groocock <me@frebib.net>