feat: Include endpoint URI in connection failure events

[tomkerkhove]

Changes

Include endpoint URI in connection failure events to help improve troubleshooting to ensure that the called endpoint is configured correctly.

For significant contributions please make sure you have completed the following items:

• Update changelog
• [ ] Design discussion issue #
• [ ] Changes in public API reviewed

Did not update public API given the event source is internal.

[tomkerkhove]

I'd love to update the public API docs but would need some more help. The contribution guide mentions to use intellisense, but do you mean start typing and use the autocomplete or does it support this kind of generation?

[cijothomas]

I'd love to update the public API docs but would need some more help. The contribution guide mentions to use intellisense, but do you mean start typing and use the autocomplete or does it support this kind of generation?

There is no public API change in this PR, so no need of public API doc update.

[codecov]

Codecov Report

Merging #2686 (68761ea) into main (f153cb1) will decrease coverage by 0.02%.
The diff coverage is 14.28%.

@@            Coverage Diff             @@
##             main    #2686      +/-   ##
==========================================
- Coverage   82.95%   82.93%   -0.03%     
==========================================
  Files         249      249              
  Lines        8703     8704       +1     
==========================================
- Hits         7220     7219       -1     
- Misses       1483     1485       +2     

Impacted Files	Coverage Δ
...mentation/ExportClient/BaseOtlpHttpExportClient.cs	73.91% <0.00%> (ø)
...ementation/ExportClient/OtlpGrpcLogExportClient.cs	0.00% <0.00%> (ø)
...tation/ExportClient/OtlpGrpcMetricsExportClient.cs	0.00% <0.00%> (ø)
...entation/ExportClient/OtlpGrpcTraceExportClient.cs	35.71% <0.00%> (ø)
...tation/OpenTelemetryProtocolExporterEventSource.cs	65.00% <33.33%> (-3.43%)	⬇️
...emetry.Api/Internal/OpenTelemetryApiEventSource.cs	76.47% <0.00%> (-5.89%)	⬇️
...ZPages/Implementation/ZPagesExporterEventSource.cs	62.50% <0.00%> (+6.25%)	⬆️

[tomkerkhove]

I didn't add any additional testing since EventSourceTest_OpenTelemetryProtocolExporterEventSource seems to be handling this but the code coverage is dropping.

Any guidance on the testing side on what I should improve?