Small fixes for code quality report

.gitlab-ci.yml

@@ -214,6 +214,7 @@ code_quality:
   image: docker:stable
   services:
     - docker:stable-dind
+  allow_failure: true
   rules:
     - if: $CI_PIPELINE_SOURCE == "trigger" ||
         $CI_MERGE_REQUEST_EVENT_TYPE == "merge_train"
@@ -222,6 +223,7 @@ code_quality:
         $CI_COMMIT_BRANCH == "development" ||
         $CI_MERGE_REQUEST_ID
   script:
+    - rm -r .gitlab/ build/ out/ target/ .idea/ .gradle/ gradle/ src/main/generated || true
     - docker run
       --env SOURCE_CODE="$PWD"
       --env CODECLIMATE_DEBUG="1"