[ci] Enable flacky collector for tests (#1439)

.gitlab/pipeline/test.yml

@@ -36,9 +36,23 @@ test-linux-stable:
         --no-fail-fast \
         --features try-runtime,experimental \
         --partition count:${CI_NODE_INDEX}/${CI_NODE_TOTAL}
+    # Upload tests results to Elasticsearch
+    - echo "Upload test results to Elasticsearch"
+    - cat target/nextest/default/junit.xml | xq . > target/nextest/default/junit.json
+    - |
+      curl -v -XPOST --http1.1 \
+      -u ${ELASTIC_USERNAME}:${ELASTIC_PASSWORD} \
+      https://elasticsearch.parity-build.parity.io/unit-tests/_doc/${CI_JOB_ID} \
+      -H 'Content-Type: application/json' \
+      -d @target/nextest/default/junit.json || echo "failed to upload junit report"
     # run runtime-api tests with `enable-staging-api` feature on the 1st node
     - if [ ${CI_NODE_INDEX} == 1 ]; then time cargo nextest run -p sp-api-test --features enable-staging-api; fi
-    # todo: add flacky-test collector
+  artifacts:
+    when: always
+    paths:
+      - target/nextest/default/junit.xml
+    reports:
+      junit: target/nextest/default/junit.xml
 
 test-linux-oldkernel-stable:
   extends: test-linux-stable