* allow empty featuregate values

* add changelog for #5663

As per dependabot recommendations.

* failed on unregistered featuregate
* add test for existing/noexisting gates
* change command to use Apply for now

Signed-off-by: Ziqi Zhao <[email protected]>

* Change metadata lookup to be case insensitive

Before this change, users would make references to headers such as "authorization" and "X-CloudFront-Viewer-Latitude", which would potentially fail, as they would be stored in the context as "X-Cloudfront-Viewer-Latitude" or "Authorization".

This PR changes this behavior, to attempt a case insensitive lookup to the backing map in case the key wasn't found under the requested casing. Under the assumption that the lookup key specified by users won't change, on a subsequent lookup, we proactively copy the value to the looked up key, to make the next lookup faster.

Fixes #5610
Fixes open-telemetry/opentelemetry-collector-contrib#8994

Signed-off-by: Juraci Paixão Kröhling <[email protected]>

* Add changelog entry

Signed-off-by: Juraci Paixão Kröhling <[email protected]>

* add LogMessage and move LogStabilityLevel

This change will make the func available for extensions as well.

* add docstring

* fix typo

* fix impi

* apply review feedback

* Update release.md

* add headers for responsible parties

Co-authored-by: Dmitrii Anoshin <[email protected]>

…sages (#5678)

* [exporter/logging] Decouple `loglevel` field from level of logged messages

* Update CHANGELOG.md

Co-authored-by: Alex Boten <[email protected]>

* export NewSliceFromRaw

* Add changelog entry

* Update pdata/pcommon/alias.go

Co-authored-by: Dmitrii Anoshin <[email protected]>
Co-authored-by: Alex Boten <[email protected]>

…#5677)

Build the logger on the logging exporter's logger from the one on `TelemetrySettings`, so that the logger honors the configuration settings on `telemetry::logs` and the configuration options on `CollectorSettings.LoggingOptions`.

Depends on #5678

**Link to tracking Issue:** Fixes #5652

**Documentation:** Documented the feature gate.

* add prepare-release make target

make prepare-release does the following:
- checks the local repository is clean
- search/replace PREVIOUS_VERSION with RELEASE_CANDIDATE
- runs make genotelcorecol
- creates a commit on a new branch
- runs make multimod-prerelease
- commits the changes to the branch
- creates a PR

* add check for gh

* skip changelog for [chore] prs

Add a check in the changelog job to skip the job if the title of the PR contains [chore]. This makes it possible for a user who's change doesn't require a changelog entry and doesn't have write access to the repository to skip this check.

For now I've left the check for the "Skip Changelog" label as well, in the future, this should be removed and the label can be removed altogether.

* Update .github/workflows/changelog.yml

Co-authored-by: Tyler Helmuth <[email protected]>

Signed-off-by: Ziqi Zhao <[email protected]>

Signed-off-by: Ziqi Zhao <[email protected]>

Signed-off-by: Ziqi Zhao <[email protected]>

Signed-off-by: Ziqi Zhao <[email protected]>

Signed-off-by: Ziqi Zhao <[email protected]>

Signed-off-by: Ziqi Zhao <[email protected]>

Signed-off-by: Ziqi Zhao <[email protected]>