Delete the duplicated `remote_file` declaration.

`deploy_scripts.rb` is responsible for all the scripts the sensu wiill use.
Delete the duplicated `remote_file` declaration in `client_settings.rb`.

This commit refs #274.
Allow connection from outside to the local Rabbitmq.

- Explicitly state this cookbook's dependence on `iptables` cookbook.
- add template file for rabbitmq firewall configuration.
- deploy the iptables configuration file.

This commit refs #274.
Modify the sense client name from `node.name` to `uname -n`.

This commit refs #274.
Refactor the `server_settings.rb` and divide into:

- `server_checks.rb`
- `server_handlers.rb`
- `server_settings.rb`

This commit refs #274.
Add `crit_only` handler.

This commit refs #274.
Delete the unnecessary configurations.

This commit fixes #274.
Merge branch 'id/274' into dev