Manfred: The CY8CKIT-059LP doesn't have any pads for the Ez-Ble module the pads are for the Mini Prog 3 programmer. the CY8CKIT-043 module does have pads for the Ez-Ble module. You could hook up a Ez-Ble externally if you wanted too.
Your question is interesting.
Your goal is to add BLE for the PSoC 5LP of your CY8CKIT-059 board.
In this case can use a bridge BLE-I2C (or other serial link). There are a few example of BLE project for dedicated dev board.
By connecting the two development boards, your PSoC 5LP can communicate in BLE (via the bridge).