Add remote address to gRPC spans

[brunobat]

This data was missing from spans and a user asked for it.

[quarkus-bot]

/cc @radcortez (opentelemetry)

[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit 5d0ed38.

✅ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.

You can consult the Develocity build scans.

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Flaky tests - Develocity

⚙️ JVM Tests - JDK 17

📦 integration-tests/reactive-messaging-context-propagation

✖ io.quarkus.it.kafka.KafkaContextPropagationTest.testAbsenceOfContextPropagationBlocking - History

• 1 expectation failed. Expected status code <500> but was <204>. - java.lang.AssertionError

java.lang.AssertionError: 
1 expectation failed.
Expected status code <500> but was <204>.

	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)

✖ io.quarkus.it.kafka.KafkaContextPropagationTest.testAbsenceOfContextPropagationBlockingUni - History

• 1 expectation failed. Expected status code <500> but was <204>. - java.lang.AssertionError

java.lang.AssertionError: 
1 expectation failed.
Expected status code <500> but was <204>.

	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)

---

⚙️ JVM Tests - JDK 21

📦 integration-tests/reactive-messaging-context-propagation

✖ io.quarkus.it.kafka.KafkaContextPropagationTest.testAbsenceOfContextPropagationBlocking - History

• 1 expectation failed. Expected status code <500> but was <204>. - java.lang.AssertionError

java.lang.AssertionError: 
1 expectation failed.
Expected status code <500> but was <204>.

	at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62)
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486)
	at org.codehaus.groovy.reflection.CachedConstructor.invoke(CachedConstructor.java:73)

[gsmet]

I'm not against backporting to 3.18 if you think it makes sense. Add the label if you do.

[gastaldi]

Waiting for @alesj's approval before merging this