Update for Distributed Tracing

[TsuyoshiUshio]

This PR is for updating worker.config for enabling distributed tracing.

I introduced AZURE_FUNCTIONS_MESH_JAVA_OPTS to the argument.

At first, I used JAVA_OPTS however, some customers seem to use it.
I introduce a new variables the is used only for mesh image configuration.

Any naming suggesting is welcome.

[TsuyoshiUshio]

Hi @amamounelsayed
I tested both on Windows and Mesh image. I put a log (Linux) and Debug(Windows)
on this part and find it works. https://github.com/Azure/azure-functions-host/blob/0f18eade4b28b8cdde9e6a63dd0b7d4d0a051329/src/WebJobs.Script/Workers/ProcessManagement/DefaultWorkerProcessFactory.cs#L60

CI looks fails by CosmosDB that is not related this change. I'll re-run it.

[TsuyoshiUshio]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[TsuyoshiUshio]

Looks refused from the server. Usually Network Issue. Other things I found is the worker start using .Net 5

System.Net.Http.HttpRequestException : No connection could be made because the target machine actively refused it
---- System.Net.Sockets.SocketException : No connection could be made because the target machine actively refused it

[TsuyoshiUshio]

I run the pipeline one more time, If it won't fix, I'll make the client to static.

[TsuyoshiUshio]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[TsuyoshiUshio]

I found the root cause of the CI fails. It looks reach the timeout when it reach the CosmosDB for reading a document. I can't see the CosmosDB resource from my subscription. Other socket exception is subsequent result of the timeout. So that I increase the timeout for solving it.
https://azfunc.visualstudio.com/Azure%20Functions/_build/results?buildId=9802&view=ms.vss-test-web.build-test-results-tab&runId=1062300&resultId=100007&paneView=debug Could you have a look and approve it? I also change the http client to static. It is better solution, so that I keep it.

[amamounelsayed]

@TsuyoshiUshio tested the Java_opts and new env AZURE_FUNCTIONS_MESH_JAVA_OPTS and both work together and do not override each others.