[CI] Run Serverless tests

Author: picandocodigo

.buildkite/pipeline.yml

@@ -61,6 +61,7 @@ steps:
       RUBY_VERSION: "{{ matrix.ruby }}"
       RUBY_SOURCE: "{{ matrix.ruby_source }}"
       TEST_SUITE: serverless
+      ES_YAML_TESTS_BRANCH: main
       QUIET: false
     matrix:
       setup:
@@ -73,6 +74,7 @@ steps:
             ruby_source: 'jruby'
             ruby: '9.4'
     command: ./.buildkite/run-serverless-tests.sh
+    artifact_paths: "elasticsearch-api/tmp/*"
   - label: "Destroy :elasticsearch: Serverless projects"
     depends_on:
       - step: run-serverless-tests

.buildkite/run-serverless-tests.sh

@@ -33,4 +33,4 @@ docker run \
        --name elasticsearch-ruby \
        --rm \
        elastic/elasticsearch-ruby \
-       bundle exec rake info
+       bundle exec bundle exec rake test:yaml