Once I published my pet Scala project to central (via Sonatype OSS)
with settings also copied from the Sonatype OSS parent POM. Worked
like a charm.
> How to request an account at Sonartype?
You just create a Jira account  there.
> And how to make sure somebody of the Camel Extra Team released this version?
We need to ask Hadrian (as issue  owner) to ask Juven Xu (Sonatype
repo keeper) via Jira comment  to grant us permission to write to
org/apache-extras/camel-extra directory. Then we could deploy
snapshots and release staging artifacts (that will be eventually
synced with Maven Central).
I'll ping Hadrian for Sonatype permissions for us (you only, as I'm
not regular Camel commiter?).