HTTP semantic convention stability migration for httpx (open-telemetry#2631)

Author: emdneto

CHANGELOG.md

@@ -17,6 +17,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#2616](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2616))
 - `opentelemetry-instrumentation-confluent-kafka` Add support for produce purge
   ([#2638](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2638))
+- `opentelemetry-instrumentation-httpx` Implement new semantic convention opt-in migration with stable http semantic conventions
+  ([#2631](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2631))
 - `opentelemetry-instrumentation-system-metrics` Permit to use psutil 6.0+.
   ([#2630](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2630))
 

instrumentation/README.md

@@ -22,7 +22,7 @@
 | [opentelemetry-instrumentation-fastapi](./opentelemetry-instrumentation-fastapi) | fastapi ~= 0.58 | Yes | experimental
 | [opentelemetry-instrumentation-flask](./opentelemetry-instrumentation-flask) | flask >= 1.0 | Yes | migration
 | [opentelemetry-instrumentation-grpc](./opentelemetry-instrumentation-grpc) | grpcio ~= 1.27 | No | experimental
-| [opentelemetry-instrumentation-httpx](./opentelemetry-instrumentation-httpx) | httpx >= 0.18.0 | No | experimental
+| [opentelemetry-instrumentation-httpx](./opentelemetry-instrumentation-httpx) | httpx >= 0.18.0 | No | migration
 | [opentelemetry-instrumentation-jinja2](./opentelemetry-instrumentation-jinja2) | jinja2 >= 2.7, < 4.0 | No | experimental
 | [opentelemetry-instrumentation-kafka-python](./opentelemetry-instrumentation-kafka-python) | kafka-python >= 2.0 | No | experimental
 | [opentelemetry-instrumentation-logging](./opentelemetry-instrumentation-logging) | logging | No | experimental