Fix native image building with datastax driver dependency

[kathirsvn]

What this PR does:

• Datastax java-driver dependency adds a class called com.datastax.oss.driver.internal.core.metadata.MetadataManager which initializes java.net.InetAddress

• The native-image tool used for building the native image expects java.net.InetAddress to be always initialized at runtime since version 19.3.0 (https://stackoverflow.com/questions/63328298/how-do-you-debug-a-no-instances-of-are-allowed-in-the-image-heap-when-buil)

• Quarkus provides a way to pass additional args to pass to native-image via quarkus.native.additional-build-args
  where we can pass the classes to be initialized at runtime

• So passing below arg fixes the native image building

-Dquarkus.native.additional-build-args='--initialize-at-run-time=com.datastax.oss.driver.internal.core.metadata.MetadataManager'

Which issue(s) this PR fixes:
Fixes #597

Checklist

• Changes manually tested
• Automated Tests added/updated
• Documentation added/updated
• CLA Signed: DataStax CLA

[Yuqi-Du]

I am thinking could we move this -Dquarkus.native.additional-build-args to configuration.yaml?
Since if every time we find some classes which need a runtime initialization, we add the command, the command will be longer?

Not very sure.

[kathirsvn]

Good point @Yuqi-Du. Also, less change :-) Updated in this commit de2a049.

[Yuqi-Du]

LGTM!!

[tatu-at-datastax]

LGTM -- thank you for adding a reference to issue, important to know where this setting came from (and why)