message: test(core): add test for getting a user prv with cold derivation seed
  Ticket:
diff: @@ -189,6 +189,16 @@ describe('V2 Wallet:', function() {
  });
  });
  + describe('Get User Prv', () => {
  + it('should use the cold derivation seed to derive the proper user private key', async () => {
  + const userKeychain = {
  + prv: 'xprv9s21ZrQH143K3hekyNj7TciR4XNYe1kMj68W2ipjJGNHETWP7o42AjDnSPgKhdZ4x8NBAvaL72RrXjuXNdmkMqLERZza73oYugGtbLFXG8g',
  + coldDerivationSeed: '123',
  + };
  + wallet.getUserPrv(userKeychain).should.eql('xprv9yoG67Td11uwjXwbV8zEmrySVXERu5FZAsLD9suBeEJbgJqANs8Yng5dEJoii7hag5JermK6PbfxgDmSzW7ewWeLmeJEkmPfmZUSLdETtHx');
  + });
  + });
  +
  describe('Transaction Signature Verification', function() {
  let wallet;
  let basecoin;
  