Fail eagerly when beats artifacts don't exist

.ci/jobs.t/elastic+elasticsearch+periodic+release-tests.yml

@@ -22,8 +22,8 @@
           export BEATS_DIR=$(pwd)/distribution/docker/build/artifacts/beats
 
           mkdir -p ${BEATS_DIR}
-          curl -o "${BEATS_DIR}/metricbeat-${ES_VERSION}-linux-x86_64.tar.gz" https://snapshots-no-kpi.elastic.co/downloads/beats/metricbeat/metricbeat-${ES_VERSION}-SNAPSHOT-linux-x86_64.tar.gz
-          curl -o "${BEATS_DIR}/filebeat-${ES_VERSION}-linux-x86_64.tar.gz" https://snapshots-no-kpi.elastic.co/downloads/beats/filebeat/filebeat-${ES_VERSION}-SNAPSHOT-linux-x86_64.tar.gz
+          curl --fail -o "${BEATS_DIR}/metricbeat-${ES_VERSION}-linux-x86_64.tar.gz" https://snapshots-no-kpi.elastic.co/downloads/beats/metricbeat/metricbeat-${ES_VERSION}-SNAPSHOT-linux-x86_64.tar.gz
+          curl --fail -o "${BEATS_DIR}/filebeat-${ES_VERSION}-linux-x86_64.tar.gz" https://snapshots-no-kpi.elastic.co/downloads/beats/filebeat/filebeat-${ES_VERSION}-SNAPSHOT-linux-x86_64.tar.gz
 
           $WORKSPACE/.ci/scripts/run-gradle.sh -Dbwc.checkout.align=true -Dbuild.snapshot=false \
             -Dtests.jvm.argline=-Dbuild.snapshot=false -Dlicense.key=${WORKSPACE}/x-pack/license-tools/src/test/resources/public.key -Dbuild.id=deadbeef build