Upgrade OpenTelemetry and other tracing crates (#9200)

* tracing-utils now returns a `Layer` impl. Removes the need for crates
to
  import OTel crates.
* Drop the /v1/traces URI check. Verified that the code does the right
thing.
* Leave a TODO to hook in an error handler for OTel to log errors to
when it
  assumes the regular pipeline cannot be used/is broken.

compute_tools/src/bin/compute_ctl.rs

@@ -218,7 +218,7 @@ fn startup_context_from_env() -> Option<opentelemetry::ContextGuard> {
     }
     if !startup_tracing_carrier.is_empty() {
         use opentelemetry::propagation::TextMapPropagator;
-        use opentelemetry::sdk::propagation::TraceContextPropagator;
+        use opentelemetry_sdk::propagation::TraceContextPropagator;
         let guard = TraceContextPropagator::new()
             .extract(&startup_tracing_carrier)
             .attach();