fix(@embark/tests): Fix failing test with `—node=embark`
fix(@embark/tests): Fix failing test with `—node=embark`

## Problem
When using `embark test —node=embark` with the test app, the test that listens for contract events would always fail after timing out. Funnily enough, after the timeout, the subsequent test would run, executing a method that would ulimately fire the event listened for in the previous test, causing the second test to fail as well.

## Solution (workaround)
Update the contract events listener test in the test app to execute the `set2` method twice, successfully working around the issue.

## NOTES
The cause of the issue is unknown and why the workaround works is also unknown.

This change works with both `embark test` and `embark test —node=embark`.

iurimatias/embark-framework,iurimatias/embark-framework