Update GitlabCI gradle commands

.gitlab-ci.yml

@@ -16,7 +16,7 @@ variables:
 build:
   stage: build
   script:
-    - ./gradlew assemble
+    - gradle assemble
   artifacts:
     paths:
       - build/libs/*.jar
@@ -27,7 +27,7 @@ build:
 test:
   stage: test
   script:
-    - ./gradlew check
+    - gradle check
     - awk -F"," '{ instructions += $4 + $5; covered += $5 } END { print covered, "/", instructions, " instructions covered"; print 100*covered/instructions, "% covered" }' $JACOCO_CSV_LOCATION
 
 after_script: