Added backend test in CI

.gitlab-ci.yml

@@ -2,7 +2,19 @@ stages:
   - test
   - dockerize
 
-deploy:
+test_backend:
+  stage: test
+  tags:
+    - docker
+  script:
+    - cd vospace-ui-backend
+    - mvn clean test
+    - awk -F"," '{ instructions += $4 + $5; covered += $5 } END { print "coverage=" 100*covered/instructions }' target/site/jacoco/jacoco.csv
+  coverage: '/coverage=\d+\.\d+/'
+  only:
+    - master
+
+dockerize:
   stage: dockerize
   tags:
     - shell