Great news ! Spark 2.3.0 was released yesterday. This new release comes with many great features, checkout the release note

One of the many notable features is the Spark on Kubernetes support. It provides a new kubernetes scheduler backend that supports native submission of spark jobs to a kubernetes cluster.

For those who are interested in the details of implementation, you can check out the  Spark on Kubernetes Design Proposal

Here is the associated Jira ticket https://issues.apache.org/jira/browse/SPARK-18278