message: Improve failing test for testnet tokens
  We added a new testnet token to statics, and this is causing a unit test
  to fail in modules/core. Instead of asserting the exact number of
  testnet tokens, let's just make sure the property exists and has a
  length greater than zero.
  Ticket:
diff: @@ -459,11 +459,8 @@ describe('BitGo Prototype Methods', function() {
  it('Should return a non-empty list of tokens before the server responds', co(function *coTokenDefinitionsIt() {
  const bitgo = new TestBitGo({ env: 'mock' });
  bitgo.initializeTestVars();
  - const tokens = bitgo.getConstants().eth.tokens;
  -
  - // currently seven tokens are defined for non-production environments
  - should.exist(tokens);
  - tokens.length.should.equal(7);
  + const constants = bitgo.getConstants();
  + constants.should.have.propertyByPath('eth', 'tokens', 'length').greaterThan(0);
  }));
  after(function tokenDefinitionsAfter() {
  