Provide better default names for rails services

[p-lambert]

Instead of using static defaults (rails-app, rails-controller), we prepend the Rails app name to that value. The app name is retrieved using ::Rails.application.class if you didn't set it. In both cases, you'll have:

intake
intake-controller
intake-cache
...

You can still override each value if you want to keep different names than the ones provided by default.

[ufoot]

Nice, indeed this would be more useful.

But we need to make obvious in the release docs as this is a breaking change to some extent. Indeed, it might change the name of services for all those who did not override it, and this is going to start a new set of stats, with new metrics, dashboards, where "day 0" will be the time this version has been installed. The old rails services will appear as if they disappeared.

[dasch]

👍 ❤️