Added methods for SpanID and TraceID on bridgeSpanContext

[Kaushal28]

Resolves: #3954

Added methods for SpanID and TraceID on bridgeSpanContext and corresponding unit test case.

[pellared]

1. It is not documented how to use it. See bridge/opentracing/README.md and the "extending" section.
2. It would be good to add some tests or at least comments in code that would make sure that someone would not remove these methods in future.
3. Missing changelog entry.

EDIT: See #3570 for reference.

[Kaushal28]

Updated the PR based on your suggestions. However, I am not exactly sure about the usage of the methods. So I have added a similar description as the reference you provided. So suggestions/feedback would be really helpful there. Also, updated the test case based on that, added comments on the methods and added entry in CHANGELOG.md.

[codecov]

Codecov Report

Merging #3966 (4038159) into main (6acade8) will decrease coverage by 0.1%.
The diff coverage is 66.6%.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #3966     +/-   ##
=======================================
- Coverage   82.2%   82.2%   -0.1%     
=======================================
  Files        175     175             
  Lines      13067   13065      -2     
=======================================
- Hits       10744   10742      -2     
  Misses      2102    2102             
  Partials     221     221             

Impacted Files	Coverage Δ
bridge/opentracing/bridge.go	63.7% <66.6%> (-0.2%)	⬇️

[MadVikingGod]

I'm wondering, instead of chasing down all the methods that SpanContext exposes, should we just have the bridgeSpanContext be able to produce the otel SpanContext?

We can't drop IsSampled, but this might head off the need for IsValid, IsRemote, TraceFlags, TraceState, and anything else that might be added in the future.

[Kaushal28]

@MadVikingGod, @pellared, I made changes as you suggested. I added otel.SpanContext to bridgeSpanContext struct as anonymous field and promoted all the available methods on otel.SpanContext to bridgeSpanContext so that any method can be accessed similar to how isSampled() is currently being accessed. Let me know this change makes sense. Any suggestions/feedback would be really helpful. Thanks.

[pellared]

bridge/opentracing/README.md:64:3 MD047/single-trailing-newline Files should end with a single newline character

[Kaushal28]

@pellared @MrAlias I have fixed the test case as suggested. Please have a look. Thanks.

[Kaushal28]

Hi @MrAlias , I have made the required changes, could you please take a look and provide any feedback?

[MrAlias]

@Kaushal28 please update this branch with main so it can be merged.

[Kaushal28]

@MrAlias I updated this branch but a CI step failed while uploading codecov report with error Unable to locate build via Github Actions API. Please upload with the Codecov repository upload token to resolve issue.. Not sure whether it's temporary error. How can I re-run these checks?