fix(CI): address playbook schema issue (#4)

* fix(CI): address playbook schema issue

* chore(CI): run it on PRs

.github/workflows/ci.yml

@@ -10,6 +10,9 @@ on:
       - main
     tags:
       - "v*"
+  pull_request:
+    branches:
+      - main
 
 env:
   ANSIBLE_FORCE_COLOR: "1"

playbook.yml

@@ -6,15 +6,15 @@
     - name: Ping
       ansible.builtin.ping:
   roles:
-    - name: haproxy
+    - role: haproxy
       tags: haproxy
-    - name: node_exporter
+    - role: node_exporter
       tags: node_exporter
-    - name: vmagent
+    - role: vmagent
       tags: vmagent
       vars:
         vmagent_remote_write_url: "{{ lookup('env', 'VMAGENT_REMOTE_WRITE_URL') | default('http://localhost:8428/api/v1/write') }}"
-    - name: promtail
+    - role: promtail
       tags: promtail
       vars:
         promtail_remote_write_url: "{{ lookup('env', 'PROMTAIL_REMOTE_WRITE_URL') | default('http://localhost:3100/loki/api/v1/push') }}"