.oniro-ci: exclude symbolic link for zephyr image test

Signed-off-by: Chase Qi <chase.qi@linaro.org>

.oniro-ci/test-generic.yaml

@@ -73,7 +73,7 @@
       rm -rf lava_jobs && mkdir lava_jobs
       # Generate job definitions for zephyr build
       if echo "${CI_BUILD_JOB_NAME}" | grep -i "zephyr" | grep -vi "twister"; then
-        for image in $(find artifacts/images/${MACHINE} -name "*.elf" -exec basename {} \;); do
+        for image in $(find artifacts/images/${MACHINE} -type f -name "*.elf" -exec basename {} \;); do
           image_basename=$(basename "${image}" ".elf")
           echo "--- Generating lava job definition ${image_basename}.yaml ---"
           sed "s/@image_basename@/$image_basename/" job_def.yaml | tee lava_jobs/"${image_basename}".yaml