The behaviour of the `include` module is badly defined (it try to choose
between statically importing the tasks and dynamically including them)
and can cause problems depending on any number of constraints (mostly if
it choose the wrong behaviour).
Replace it with the `import_tasks` (always statically import tasks) unless
the `include` is in a loop in which case we replace it with
`include_tasks` (always dynamically include tasks).
Because it's more than just pure configuration, but a fpm pool
definition, I've changed the following variables in Ansible :
- php_fpm_defaults_conf_file to replaced by php_fpm_default_pool_file
- php_fpm_custom_conf_file to php_fpm_default_pool_custom_file.
On the FPM side, I've also changed the files names of the pool to make
them more explicit. No more z and zzz. It's the www pool, so let's put
www in the file name for coherence :
- z-evolinux-defaults.conf changes to www-evolinux-defaults.conf
- zzz-evolinux-custom.conf changes to www-evolinux-zcustom.conf