Store actual System TZ (not Ansible's ambiguous TZ abbreviations) into fpm/php.ini & cli/php.ini — for Matomo etc

[holta]

@cwivagg this PR should finally fix the Time Zone in Matomo (as well as providing better TZ hygiene for all of IIAB's PHP-based apps). LMK please if you discover quirks on VirtualBox or anywhere!

It works by bypassing Ansible's unhelpful TZ abbreviation mechanisms {ansible_date_time.tz, ansible_date_time.tz_dst, ansible_date_time.tz_offset} and instead using Linux's TZ directly (e.g. America/New_York, from symlink /etc/localtime and/or text file /etc/timezone — or the absence of both — which in fact means time zone UTC).

Thanks to the very hard work from many. Including @jvonau, @cwivagg and others..

FYI this PR also documents, clarifies and cleans up, e.g.:

• Renaming www_options/tasks/set-php-limits.tml to www_options/tasks/php-settings.yml
• Renaming flag var set_php_limits_done to php_settings_done

This PR was tested quite extensively on Debian 12's latest daily. It builds on:

• Use of /etc/php.ini #69
• WordPress Umbrella Tkt, e.g. PHP blocks uploading of graphics > 2MB? (WP defaults not Ok?) #1147
• IIAB Community Analytics framework, above & beyond AWStats (likely Matomo?) #1762
• PR Make IIAB's bootstrapping role (0-init) more understandable #2886
• Look at per app setting of php via /etc/php/x.x/fpm/pool.d #2953
• PR Remove 500M restriction on file uploads. Use 10G instead. [affects NGINX, PHP, Calibre-Web, Moodle, Nextcloud, WordPress, PBX, ETC] #3148
• PR Cwivagg/matomo 20220618 #3304
• PR Somewhat higher PHP limits for Matomo — similar to Nextcloud, PBX, WordPress #3447
• PR Several updates to make Matomo experience cleaner #3448
• PR PHP Limits Dependency Cleanup: www_options/tasks/set-php-limits.yml run on demand (by 5 relevant roles) #3449
• PR Php timezone #3452

[holta]

This PR is reconfirmed working well with a fresh install onto Multipass VM (Ubuntu 22.04). The correct TZ is shown after logging into http://box/matomo and then browsing to:

• Administration > Websites > Manage > TIME ZONE
• Administration > Websites > Settings > Default Time zone for new websites

( Above click-trails [Matomo 4.13.0 above] being a slight change from what's described at https://matomo.org/faq/how-to/faq_83/ )

[holta]

More than an enhancement, this PR is basically a bug fix (i.e. Lines 27-39 of www_options/tasks/php-settings.yml) for IIAB's longstanding small issue with Matomo Time Zones.

Look good. Thanks all who can confirm.

[jvonau]

https://www.php.net/manual/en/timezones.others.php