Add gitlab_ci.yml

.gitlab-ci.yml

+sonarqube_master_job:
+  stage: test
+  only:
+  - master
+  script:
+  - ./gradlew sonarqube -Dsonar.host.url=http://localhost:9000 -Dsonar.login=admin -Dsonar.password=admin
+
+sonarqube_preview_feature_job:
+  stage: test
+  only:
+  - /^feature\/*/
+  script:
+  - git checkout origin/master
+  - git merge $CI_COMMIT_REF --no-commit --no-ff
+  - ./gradlew sonarqube -Dsonar.host.url=http://localhost:9000 -Dsonar.login=admin -Dsonar.password=admin -Dsonar.analysis.mode=preview -Dsonar.gitlab.commit_sha=$CI_BUILD_REF -Dsonar.gitlab.ref=$CI_BUILD_REF_NAME -Dsonar.gitab.project_id=$CI_PROJECT_ID
\ No newline at end of file