Use custom properties in loyalty integration

The custom properties in loyalty need to follow a convention.

Custom properties used in Oracle Commerce need to follow a naming convention, for example x_customProperty). You should change any custom properties you had created in the past to follow this convention. For example:

Older format	New format
enrollToLoyalty	occ_enrollToLoyalty
loyaltyTransactionId	occ_loyaltyTransactionId
loyaltyPointsAccrued	occ_loyaltyPointsAccrued
accruedPointType	occ_accruedPointType