Add Retry to OTLP Exporter

[AaronRM]

Fixes # Design discussion issue (if applicable) #

Changes

Please provide a brief description of the changes here.

Merge requirement checklist

• [ ] CONTRIBUTING guidelines followed
• [ ] Unit tests added/updated (if applicable)
• [ ] Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• [ ] Changes in public API reviewed (if applicable)

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 73.97260% with 38 lines in your changes missing coverage. Please review.

Project coverage is 79.3%. Comparing base (367e484) to head (98469f3). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
opentelemetry-otlp/src/exporter/tonic/logs.rs	0.0%	37 Missing :warning:
opentelemetry-otlp/src/exporter/http/mod.rs	0.0%	1 Missing :warning:

Additional details and impacted files

@@          Coverage Diff           @@
##            main   #2727    +/-   ##
======================================
  Coverage   79.3%   79.3%            
======================================
  Files        123     124     +1     
  Lines      22670   22800   +130     
======================================
+ Hits       17986   18093   +107     
- Misses      4684    4707    +23     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[otiv-emiel-vanseveren]

Any plans to progress this PR in the near future? :eyes:

[scottgerring]

Hey folks, i'm planning on picking up from @AaronRM 's work here and getting it over the line as part of #3081 . Closing this accordingly.