Make cookbook tests run again.
Apache should be configured using the given group from the attributes - https://github.com/aws/opsworks-cookbooks/issues/196
Bump Ruby version to something we actually use on instances.
Some fixes for PHP deployment and DB handling:

* Skip non-php apps when installing the PHP db drivers
* Fallback to MySQL driver
* Handle apps with no database config
Merge branch 'master-chef-11.10' into mainline-chef-11.10