Update TWLight to send nginx log data to matomo

[jsnshrmn]

Description

• Adds a syslog service
• configures nginx with a json log format that is shipped to syslog
• configures syslog with the matomo-log-analytics script as the destination

In this configuration, our nginx access logs are ingested into matomo using the same API as the javascript tracker

Rationale

This is the glue that gets analytics into matomo

Phabricator Ticket

https://phabricator.wikimedia.org/T281743

How Has This Been Tested?

I created a local site code in matomo and created an auth token and temporarily added those values into docker-compose.yml so that I could test. I then accessed the local dev site and checked the matomo dashboard. The traffic is showing up there.

Screenshots of your changes (if appropriate):

NA

Types of changes

What types of changes does your code introduce? Add an x in all the boxes that apply:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Minor change (fix a typo, add a translation tag, add section to README, etc.)

[jsnshrmn]

Realized that I hadn't updated the debian swarm init script. Wouldn't impact our running instances, but would impact freshly created servers. Fixed!

[suecarmol]

Thanks for setting up Matomo! This looks great.