[CI] update test run command

.gitlab-ci.yml

@@ -4,7 +4,5 @@ stages:
 tests:
   image: ubuntu:16.04
   script:
-    - for t in $(grep -E -o '_test_case_(\w+)\>' ./test.sh); do 
-        ./test.sh $t;
-      done
+    - ./test.sh
   stage: test