This avoids configuring the task eagerly.

This addresses a deprecation warning causing build caching to be
disabled for some tasks. With this change, we tell Gradle that the
rncToXsd task produces output that should be considered a resource.
This clears up ambiguities when computing the task graph.

This addresses a deprecation warning causing build caching to be
disabled for the checkstyleNohttp task. With this change, we tell
Gradle that the rncToXsd task in the spring-security-config project
produces output that should be considered when running the
checkstyleNohttp task. This clears up ambiguities when computing the
task graph.