Bump Bunny to 1.1.7+

Fix a thread leak which affects apps that perform
manual recovery, including Logstash RabbitMQ plugin.

Plus this kind of latency improvements:

![](https://f.cloud.github.com/assets/1800798/2175168/ac09c4dc-95ba-11e3-93d9-a28fb25a8327.png)
Merge pull request #1190 from michaelklishin/patch-5

[rabbitmq] Bump Bunny to 1.1.7+
Add option 'full_tweet' (default false)

When enabled, the full twitter tweet object and structure is used
as the event.
Merge pull request #1196 from jordansissel/twitter-full-tweet

Add option 'full_tweet' (default false)
Merge remote-tracking branch 'upstream/master'