Moar php-fpm pool customisation
Use conditional attribute for default php-fpm pool

Fix for FC023 violation
Fix extension path for Debian Dotdeb

Not sure why this was working before, it definitely looks wrong...
Use official Opscode Debian 6 box for testing
Fix for incorrect php-fpm config directory on CentOS
User and Group should be required for php-fpm pools

We can't rely on any account to be already present, so people must
specify these when setting up a new pool. For the default pool, we'll
create a new user/group for them.
Refactor tests into a test cookbook

Also add a test for the php-fpm pool provider
Update php-fpm pool documentation