message: refactor(core): update buildTx in Core
  Added stakingOptions to the parameters whitelist in v2/ wallet.ts
  stlx-3329
diff: @@ -503,6 +503,7 @@ export class Wallet {
  'lastLedgerSequence', 'ledgerSequenceDelta', 'maxFee', 'maxFeeRate', 'maxValue', 'memo', 'transferId', 'message', 'minConfirms',
  'minValue', 'noSplitChange', 'numBlocks', 'recipients', 'reservation', 'sequenceId', 'strategy',
  'targetWalletUnspents', 'trustlines', 'type', 'unspents', 'nonParticipation', 'validFromBlock', 'validToBlock', 'messageKey',
  + 'stakingOptions'
  ];
  }
  @@ -2046,6 +2047,7 @@ export class Wallet {
  'lastLedgerSequence', 'ledgerSequenceDelta', 'gasPrice',
  'noSplitChange', 'unspents', 'comment', 'otp', 'changeAddress',
  'instant', 'memo', 'type', 'trustlines', 'transferId',
  + 'stakingOptions'
  ]);
  const finalTxParams = _.extend({}, halfSignedTransaction, selectParams);
  self.bitgo.setRequestTracer(reqId);
  