/var/log access from add-ons

I was working on getting a fluent-bit add-on setup to ship logs (I thought that’d help with deprecation warnings and other potential issues) but it looks like there’s no way to mount it with the current setup.

The only possible solution I see here is giving the add-on docker.sock access and having it spin up its own “sidecar” container which doesn’t seem like a great solution.

build/lib/supervisor/docker/addon.py:214

I can put up a PR to add something for /var/log but thought I’d start a thread here first