OpenSearch/x-pack/plugin/ilm/qa/build.gradle

import org.elasticsearch.gradle.test.RestIntegTestTask

subprojects {
    project.tasks.withType(RestIntegTestTask) {
        final File xPackResources = new File(xpackProject('plugin').projectDir, 'src/test/resources')
        project.copyRestSpec.from(xPackResources) {
            include 'rest-api-spec/api/**'
        }
    }
}