Logging / Tracing with Opentelemetry Collector - get rid of opentelemetry-jaeger

[joepio]

For a long time, I've used OpenTelemetry + Jaeger to collect logs & traces of AtomicServer. This was very useful in finding performance bottlenecks, and it provided a nice UI for checking / searching logs. It used a jaeger-specific implementation.

As I discussed here #652, Jaeger no longer supports OpenTelemetry in this way. I should switch to using Collector. See this blog post.

TODO

• Update telemetry implementation
• Update docs
• Update template.env

[joepio]

@Polleps tried updating to opentelemetry-otlp but had some runtime drop crash:

Cannot drop a runtime in a context where blocking is not allowed. This happens when a runtime is dropped from within an asynchronous context.

Polle also had some weird bugs in Jaeger where certain spans were missing. Very annoying.