Print a warning if dependant file doesn't exist

.gitlab/ci/test-metadata.gitlab-ci.yml

@@ -43,5 +43,6 @@ update-tests-metadata:
   script:
     - run_timed_command "retry gem install fog-aws mime-types activesupport rspec_profiling postgres-copy --no-document"
     - source ./scripts/rspec_helpers.sh
+    - test -f rspec_flaky/report-suite.json || echo -e "\e[31m" 'Consider add ~"pipeline:run-all-rspec" to run full rspec jobs' "\e[0m"
     - update_tests_metadata
     - update_tests_mapping