CLDCONNECT-1555: Fix broken functional tests

This also fixes [`declineEvent()`](https://github.com/mulesoft/facebook-connector/commit/febde88f5a5b5ecf1209357fb4ada285d45253e7) and [adds a `tags` parameter to `publishMessage()`](https://github.com/mulesoft/facebook-connector/commit/9c7a391811c0bc65f8704fcb08d596c5acd4473f).