Add task to postgres role to manage service state

data/ansible/roles/postgresql/defaults/main.yaml

@@ -2,3 +2,5 @@
 postgresql_version: "postgresql"
 postgresql_repo: "http://apt.postgresql.org/pub/repos/apt"
 postgresql_key_url: "https://www.postgresql.org/media/keys/ACCC4CF8.asc"
+postgresql_service_state: "started"
+postgresql_service_enabled: "no"

data/ansible/roles/postgresql/tasks/main.yaml

@@ -17,4 +17,11 @@
   ansible.builtin.apt:
     name: "{{ postgresql_version }}"
     state: latest
-    update_cache: yes
+    update_cache: yes
+
+- name: Manage the PostgreSQL service
+  become: yes
+  ansible.builtin.systemd:
+    name: postgresql
+    state: "{{ postgresql_service_state }}"
+    enabled: "{{ postgresql_service_enabled }}"