message: fix(core): fix token unit test which expected Bluebird promise
  Ticket:
diff: -import * as Bluebird from 'bluebird';
  -import * as should from 'should';
  +import 'should';
  import { BaseCoin } from '../../../../src/v2/baseCoin';
  import { TestBitGo } from '../../../lib/test_bitgo';
  @@ -17,9 +16,7 @@ describe('Virtual Token:', function () {
  });
  it('should wait for client constants before instantiating coin', async function () {
  - const promise = bitgo.token('terc');
  - should(promise).be.instanceOf(Bluebird.Promise);
  - const erc = await promise;
  + const erc = await bitgo.token('terc');
  erc.should.be.instanceOf(BaseCoin);
  erc.type.should.equal('terc');
  erc.tokenContractAddress.should.equal('0x945ac907cf021a6bcd07852bb3b8c087051706a9');
  