Bump AToken and Variable Debt Token revision

Author: kartojal

contracts/protocol/tokenization/AToken.sol

@@ -26,7 +26,7 @@ contract AToken is VersionedInitializable, IncentivizedERC20, IAToken {
     keccak256('Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)');
 
   uint256 public constant UINT_MAX_VALUE = uint256(-1);
-  uint256 public constant ATOKEN_REVISION = 0x1;
+  uint256 public constant ATOKEN_REVISION = 0x2;
   address public immutable UNDERLYING_ASSET_ADDRESS;
   address public immutable RESERVE_TREASURY_ADDRESS;
   ILendingPool public immutable POOL;

contracts/protocol/tokenization/VariableDebtToken.sol

@@ -15,7 +15,7 @@ import {DebtTokenBase} from './base/DebtTokenBase.sol';
 contract VariableDebtToken is DebtTokenBase, IVariableDebtToken {
   using WadRayMath for uint256;
 
-  uint256 public constant DEBT_TOKEN_REVISION = 0x1;
+  uint256 public constant DEBT_TOKEN_REVISION = 0x2;
 
   constructor(
     address pool,