SmallRye CP - introduce ThreadContextProviderBuildItem

[mkouba]

This PR introduces the ThreadContextProviderBuildItem so that it's possible to register a CP ThreadContextProvider via build item (in addition to the current service loader facility). Furhtermore, a new ArC config property is introduced - quarkus.arc.context-propagation.enabled. This property is a temporary solution, i.e. the property itself could be removed in the future or the default value may be subject of change.

[manovotn]

Generally looks good, I have two notes though
Firstly, this has the downside that I mentioned here. I am not sure that's something that has been considered and is acceptable?
Secondly, we should have some test for it; you can take a look at these tests for inspiration and do a similar one with your config turned off.

[mkouba]

Secondly, we should have some test for it; you can take a look at these tests for inspiration and do a similar one with your config turned off.

+1

[Ladicek]

Otherwise LGTM.

[Ladicek]

Probably have to move the tests into the SRye ConProp extension?

[mkouba]

The main is broken. We'll have to wait for the fix..

[quarkus-bot]

Failing Jobs - Building be0322e

Status	Name	Step	Failures	Logs	Raw logs
✖	JVM Tests - JDK 11	Build	Failures	Logs	Raw logs
✖	JVM Tests - JDK 11 Windows	Build	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 17
✔️	JVM Tests - JDK 18

Full information is available in the Build summary check run.

Failures

⚙️ JVM Tests - JDK 11 #

- Failing: core/deployment 
! Skipped: devtools/cli devtools/gradle/gradle-application-plugin devtools/gradle/gradle-extension-plugin and 644 more

📦 core/deployment

✖ io.quarkus.deployment.dev.FileSystemWatcherTestCase.testFileSystemWatcher line 121 - More details - Source on GitHub

org.opentest4j.AssertionFailedError: expected: not <null>
	at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:152)
	at org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)

---

⚙️ JVM Tests - JDK 11 Windows #

- Failing: extensions/opentelemetry/opentelemetry/deployment 
! Skipped: extensions/opentelemetry/opentelemetry-exporter-jaeger/deployment extensions/opentelemetry/opentelemetry-exporter-otlp/deployment integration-tests/micrometer-prometheus and 6 more

📦 extensions/opentelemetry/opentelemetry/deployment

✖ io.quarkus.opentelemetry.deployment.RestClientOpenTelemetryTest.urlWithoutAuthentication line 111 - More details - Source on GitHub

org.opentest4j.AssertionFailedError: expected: <CLIENT> but was: <SERVER>
	at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151)
	at org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)