Deprecate jaeger tracing in Firehose

[Meghajit]

WHAT ?

Remove dependency of jaeger-client from Firehose along with usages anywhere in the code.

WHY ?

As mentioned on their Github handle, Jaeger Clients are being deprecated and users are being recommended to move to OpenTelemetry APIs and SDKs.

Announcement on Github handle
Announcement on their documentation
Issue on Github for the deprecation

Firehose, as of release 0.2, has a dependency on jaeger-client. However, tracing is not used actively in Firehose in production and hence this dependency can be removed safely.

Is there a deadline ?

As per the notice on jaeger-tracing :

We plan to continue accepting pull requests and making new releases of Jaeger clients through the end of 2021. 
In January 2022 we will enter a code freeze period for 6 months, during which we will no longer accept pull requests with 
new features, with the exception of security-related fixes. After that we will archive the client library repositories and will 
no longer accept new changes.