[RELEASE] Release opentelemetry-cpp 1.17.0

[marcalff]

Fixes #3069

Changes

Please provide a brief description of the changes here.

• Release opentelemetry-cpp 1.17.0

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

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[netlify]

✅ Deploy Preview for opentelemetry-cpp-api-docs canceled.

Name	Link
🔨 Latest commit	8e2782d
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[marcalff]

@open-telemetry/cpp-maintainers,

Please review @owent PR as well, so it can go in the release:

• [EXPORTER] Allow to share gRPC clients between OTLP exporters. #3041

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.82%. Comparing base (497eaf4) to head (8e2782d).
Report is 136 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3076      +/-   ##
==========================================
+ Coverage   87.12%   87.82%   +0.71%     
==========================================
  Files         200      195       -5     
  Lines        6109     5968     -141     
==========================================
- Hits         5322     5241      -81     
+ Misses        787      727      -60     

see 125 files with indirect coverage changes

[marcalff]

On hold one week, to review GRPC changes.