Upgrading Elasticsearch to OTel version 1.0.2

[ejsmith]

This PR upgrades the Elasticsearch instrumentation to OTel version 1.0.2 and serves as an example of how to get rid of ActivitySourceAdapter as well as use the new AddLegacyActivity method.

It also adds a new OpenTelemetry.Contrib.Shared project that contains all of the source shared from the main OTel .NET library that is necessary to create new instrumentations. The library is not meant to be directly referenced. Instead an instrumentation library should use the IncludeSharedInstrumentationSource MSBuild property in order to have the shared source files included in their project.

[codecov]

Codecov Report

Merging #83 (2ff8d0b) into main (fd31e5b) will decrease coverage by 0.54%.
The diff coverage is 70.73%.

@@            Coverage Diff             @@
##             main      #83      +/-   ##
==========================================
- Coverage   73.16%   72.62%   -0.55%     
==========================================
  Files          41       40       -1     
  Lines        1077     1063      -14     
==========================================
- Hits          788      772      -16     
- Misses        289      291       +2     

Impacted Files	Coverage Δ
...ntation/ElasticsearchInstrumentationEventSource.cs	0.00% <0.00%> (ø)
.../ElasticsearchRequestPipelineDiagnosticListener.cs	82.35% <76.66%> (-2.06%)	⬇️
...lasticsearch/ElasticsearchClientInstrumentation.cs	100.00% <100.00%> (+12.50%)	⬆️
...earch/ElasticsearchClientInstrumentationOptions.cs	100.00% <100.00%> (ø)
...n.Elasticsearch/TracerProviderBuilderExtensions.cs	87.50% <100.00%> (+4.16%)	⬆️

[cijothomas]

changes to move away from ActivitySourceAdapater is good and the tests confirm its working.

[cijothomas]

@ejsmith could you update the PR title and description to match the current state.
Changes look good to me, and can be merged once the CI is green.

[ejsmith]

@cijothomas I'm still waiting for resolution on open-telemetry/opentelemetry-dotnet#1856 because I need access to SuppressInstrumentationScope.IncrementIfTriggered and SuppressInstrumentationScope.DecrementIfTriggered inside of the DiagnosticSourceListener class in order to make nested activity suppression work correctly.

[ejsmith]

@cijothomas is the title and description better now? All the checks should be passing now as well.

[alexvaluyskiy]

I’ve updated the instrumentation for MassTransit and EntityFrameworkCore. But I have to add the same shared files, like in this PR.
@ejsmith @cijothomas Is there any chance this PR will be merged soon? Or I should not wait and create my own PR?

[ejsmith]

Still waiting for resolution on open-telemetry/opentelemetry-dotnet#1856 before this can be merged. I'm attempting to wait patiently. 😆

[cijothomas]

Thanks for waiting!
We'll close on the dependent PRs today, and unblock all the PRs in this repo :)

[cijothomas]

Adapt changes like this open-telemetry/opentelemetry-dotnet#1893 and this should unblock this PR including the supressdownstream functionality.

[ejsmith]

@cijothomas done