Set up CAP SKU All

This API helps Sellers to completely opt-in or opt-out from CAP program. If the subsidyEnrolled value = "true", the Seller enrolls in the CAP program. All eligible SKUs (current and future) are by default opt-in. Seller should use the SKU opt-in/opt-out API to opt-out individual items.If the subsidyEnrolled value = "false", the Seller stops participating in the CAP program and all eligible SKUs (current and future) are opt-out of the CAP program.