CircleCI: Collect Gradle test results

Author: stephan-gh

circle.yml

@@ -17,3 +17,6 @@ dependencies:
 test:
   override:
     - ./gradlew test
+  post:
+    - mkdir -p $CIRCLE_TEST_REPORTS/junit/
+    - find . -type f -regex ".*/build/test-results/.*xml" -exec cp {} $CIRCLE_TEST_REPORTS/junit/ \;