Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -36,14 +36,14 @@ cache:
 .validate: &validate
   stage: build
   script:
-    - 'mvn $MAVEN_CLI_OPTS test-compile'
+    - mvn $MAVEN_CLI_OPTS test-compile
 
 # For merge requests do not `deploy` but only run `verify`.
 # See https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html
 .verify: &verify
   stage: test
   script:
-    - 'mvn $MAVEN_CLI_OPTS verify site site:stage'
+    - mvn $MAVEN_CLI_OPTS verify site site:stage
   except:
     - master
 
@@ -67,7 +67,7 @@ deploy:jdk8:
   # Use stage test here, so the pages job may later pickup the created site.
   stage: test
   script:
-    - 'mvn $MAVEN_CLI_OPTS deploy site site:stage'
+    - mvn $MAVEN_CLI_OPTS deploy site site:stage
   only:
     - master
   # Archive up the built documentation site.