gitlab-ci: Drop '&&'; jobs fail on all script commands

Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>

.gitlab-ci.yml

@@ -9,7 +9,8 @@ style:
   image: ${GITLAB_CI_IMAGE_DEBIAN}
   stage: style
   before_script:
-    - apt-get update -qq && apt-get install -y -qq astyle git
+    - apt-get update -qq
+    - apt-get install -qq -y astyle git
   script:
     - if (test $(astyle --dry-run --options=.astylerc --formatted lib/*.cc | wc -l) -eq 0); then (exit 0); else (exit 1); fi
     - if (test $(astyle --dry-run --options=.astylerc --formatted lib/*.h | wc -l) -eq 0); then (exit 0); else (exit 1); fi