The RSpec tests issue mocha deprecation warnings when run.

```
[user@host haproxy_manager]$ bundle exec rake spec
*** Mocha deprecation warning: Change `require 'mocha'` to `require 'mocha/setup'`.


*** Mocha deprecation warning: Test::Unit or MiniTest must be loaded *before* Mocha.


*** Mocha deprecation warning: If you're integrating with a test library other than Test::Unit or MiniTest, you should use `require 'mocha/api'` instead of `require 'mocha'`.

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11 examples, 0 failures
```