Enhance TLS certificate alias and SNI handling (HTTP & gRPC)

[cescoffier]

This PR focuses on refining the handling of TLS certificates, specifically addressing issues related to aliases and Server Name Indication (SNI).

This PR includes:

• Fixing gRPC TLS server configuration to support aliases and alias passwords properly.
• Verifying gRPC handling of aliases for both clients and servers.
• Ensuring HTTP (main and management) support for aliases.
• Verifying HTTP server SNI support.

One limitation of SNI when using P12 or JKS is that all the aliases must use the same password.

[cescoffier]

@geoand We would need the same kind of tests once we have full TLS support on the reactive rest client (by full support I means all formats and options)

[sberyozkin]

LGTM, thanks

[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit 708a70f.

✅ 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.

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Flaky tests - Develocity

⚙️ JVM Tests - JDK 21

📦 extensions/smallrye-reactive-messaging-kafka/deployment

✖ io.quarkus.smallrye.reactivemessaging.kafka.deployment.dev.KafkaDevServicesDevModeTestCase.sseStream - History

• Assertion condition Expecting size of: [] to be greater than or equal to 2 but was 0 within 10 seconds. - org.awaitility.core.ConditionTimeoutException

org.awaitility.core.ConditionTimeoutException: 
Assertion condition 
Expecting size of:
  []
to be greater than or equal to 2 but was 0 within 10 seconds.
	at org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
	at org.awaitility.core.AssertionCondition.await(AssertionCondition.java:119)
	at org.awaitility.core.AssertionCondition.await(AssertionCondition.java:31)