Simplify syntax-check CI job (#4585)

.gitlab-ci/lint.yml

@@ -17,11 +17,17 @@ ansible-lint:
 syntax-check:
   extends: .job
   stage: unit-tests
+  variables:
+    ANSIBLE_INVENTORY: inventory/local-tests.cfg
+    ANSIBLE_REMOTE_USER: root
+    ANSIBLE_BECOME: "true"
+    ANSIBLE_BECOME_USER: root
+    ANSIBLE_VERBOSITY: "3"
   script:
-    - ansible-playbook -i inventory/local-tests.cfg -u root -e ansible_ssh_user=root  -b --become-user=root cluster.yml -vvv  --syntax-check
-    - ansible-playbook -i inventory/local-tests.cfg -u root -e ansible_ssh_user=root  -b --become-user=root upgrade-cluster.yml -vvv  --syntax-check
-    - ansible-playbook -i inventory/local-tests.cfg -u root -e ansible_ssh_user=root  -b --become-user=root reset.yml -vvv  --syntax-check
-    - ansible-playbook -i inventory/local-tests.cfg -u root -e ansible_ssh_user=root  -b --become-user=root extra_playbooks/upgrade-only-k8s.yml -vvv  --syntax-check
+    - ansible-playbook --syntax-check cluster.yml
+    - ansible-playbook --syntax-check upgrade-cluster.yml
+    - ansible-playbook --syntax-check reset.yml
+    - ansible-playbook --syntax-check extra_playbooks/upgrade-only-k8s.yml
   except: ['triggers', 'master']
 
 tox-inventory-builder: