Merge branch 'test-ci' into 'master'

Update .gitlab-ci.yml

See merge request !4

.gitlab-ci.yml

@@ -46,6 +46,8 @@ build-jar:
 deploy-to-maven:
   stage: deploy
   script: ./gradlew -i uploadArchives -Pmaven_pass=$MAVEN_PASS
+  only:
+    - master
   #cache:
   #  key: "$CI_COMMIT_REF_NAME"
   #  policy: push