Minor tracing samples improvements

[lmolkova]

Random improvements:

• use batching instead of simple span processor (see [QUERY] Azure-monitor-opentelemetry-exporter warning Hit max 100 active concurrent requests #36219 and Use BatchSpanProcessor in examples instead of SimpleSpanProcessor #36220)
• flush otel at the end
• remove deprecated jaeger exporter

[lmolkova]

@trask, could you please take a look?

[azure-sdk]

API change check

API changes are not detected in this pull request.

[trask]

what do you think of using the autoconfigure module now that it's been recently declared stable?

(it adds JVM shutdown hook that calls flush)

I tried it out here: trask@be1639f

[lmolkova]

what do you think of using the autoconfigure module now that it's been recently declared stable?

I like it much better, I tried running the CI against your commit

https://dev.azure.com/azure-sdk/public/_build/results?buildId=2974233&view=logs&j=056e4f97-65fc-5f8c-9394-2f5e3fb7987c&t=ce901df3-f7be-50f6-3b4e-d889e48a7388

there are no errors about dependencies from autoconfigure (that we've seen before), just the info message

Aug 03, 2023 4:38:45 PM io.opentelemetry.api.GlobalOpenTelemetry maybeAutoConfigureAndSetGlobal
INFO: AutoConfiguredOpenTelemetrySdk found on classpath but automatic configuration is disabled. To enable, run your JVM with -Dotel.java.global-autoconfigure.enabled=true

I'll cherry-pick your commit and add a banned dependency then. Thank you!