As per T2141:
Option to exclude the eToken creator address (eToken minting address) from the list of airdrop recipients, which is useful for eToken projects where the creator still holds a significant portion of the circulating supply.
Dependencies: This diff needs to follow AFTER D11256 as it's leveraging the convertEcashtoEtokenAddr from D11256, hence no unit tests for convertEcashtoEtokenAddr are included here.