[otlphttpreceiver] Allow H2C connections to otlp http receiver

[iblancasa]

Description

Allow H2C connections to otlp http receiver

Fixes #10952

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.67%. Comparing base (70fc33e) to head (66173d4).
Report is 161 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #10996   +/-   ##
=======================================
  Coverage   91.67%   91.67%           
=======================================
  Files         455      455           
  Lines       24038    24044    +6     
=======================================
+ Hits        22037    22043    +6     
  Misses       1629     1629           
  Partials      372      372           

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[iblancasa]

@djaglowski could you take a look?

[jpkrohling]

I believe this should be opt-in, and have a log warning stating that this is a "weird" configuration. Only very specific setups have a valid reason to have this enabled, such as sidecars terminating TLS right before handing over to the main container.

[iblancasa]

Is there anything else pending from this PR?

[iblancasa]

Can somebody from @open-telemetry/collector-approvers take a look? Thank you

[jpkrohling]

LGTM, however, I feel bad for introducing new features when we are aiming for v1.

If the Collector approvers decide that this is something we should NOT have for v1, I'd be on their side.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: iblancasa / name: Israel Blancas (66173d4)

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.