[SPARK-44995][K8S] Promote SparkKubernetesClientFactory to DeveloperApi
#42709
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What changes were proposed in this pull request?
This PR aims to promote
SparkKubernetesClientFactoryas stableDeveloperApiin order to maintain it officially in a backward compatible way at Apache Spark 4.0.0.Why are the changes needed?
Like SPARK-35280 and SPARK-37497,
SparkKubernetesClientFactoryis also able to be used to develop newExternalClusterManagerfor K8s environment.ExecutorPods[PollingSnapshot|WatchSnapshot]Sourceto DeveloperApi #34751Does this PR introduce any user-facing change?
No. Previously, it was
private[spark].How was this patch tested?
Manual review because this is only a visibility change.
Was this patch authored or co-authored using generative AI tooling?
No.