the document plugin needs to use the current spring javadoc #1534

Job	Run time
scan	1m 40s
build	26m 18s
Build and Publish Images / Prepare Job	18s
Build and Publish Images / Build extra images	30s
Build and Publish Images / Publish (spring-cloud-dataflow-composed-task-runner, spring-cloud-dataflow-composed-task-runner/t...	27s
Build and Publish Images / Publish (spring-cloud-dataflow-tasklauncher-sink-rabbit, spring-cloud-dataflow-tasklauncher/sprin...	46s
Build and Publish Images / Publish (spring-cloud-dataflow-single-step-batch-job, spring-cloud-dataflow-single-step-batch-job...	46s
Build and Publish Images / Publish (spring-cloud-dataflow-server, spring-cloud-dataflow-server/target, springcloud/spring-cl...	34s
Build and Publish Images / Publish (spring-cloud-dataflow-tasklauncher-sink-kafka, spring-cloud-dataflow-tasklauncher/spring...	45s
Build and Publish Images / Publish (spring-cloud-skipper-server, spring-cloud-skipper/spring-cloud-skipper-server/target, sp...	44s
done	0s
	32m 48s

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