php_fpm: add new ini file configs, fix and support php8.1

Support new variables in php ini :

• php_max_execution_time
• php_upload_max_filesize
• php_post_max_size

Add support for php 8.1 package installation

Fix bug on opcache_interned_strings_buffer invalid regex

Fix ansible lint warnings (https://ansible-lint.readthedocs.io/)

Split tasks in more files