Add mosquitto role and add playbook to deploy MQTT broker on automation.z9

playbooks/roles/mosquitto/handlers/main.yml

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+---
+- name: Restart mosquitto
+  ansible.builtin.systemd:
+    service: mosquitto.service
+    state: restarted

playbooks/roles/mosquitto/meta/argument_specs.yml

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+---
+argument_specs:
+  main:
+    options:
+      mosquitto__mosquitto_conf_content:
+        description: The content of the main mosquitto configuration file.
+        type: str
+        required: true
+      mosquitto__configs:
+        description: A list of additional mosquitto configurations.
+        type: list
+        elements: dict
+        required: false
+        options:
+          name:
+            description: >-
+              The name of the configuration file, where the configuration should
+              be deployed to. The file will be placed under `/etc/mosquitto/conf.d` and
+              `.conf` will be appended to the given name. So in the end the path
+              will be like this: `/etc/mosquitto/conf.d/\{\ name \}\}.conf`.
+            type: str
+            required: true
+          content:
+            description: The content of the configuration.
+            type: str
+            required: true

playbooks/roles/mosquitto/meta/main.yml

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+---
+dependencies:
+  - role: distribution_check
+    vars:
+      distribution_check__supported_distributions:
+        - name: Debian
+          versions:
+            - "11"

playbooks/roles/mosquitto/tasks/main.yml

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+---
+- name: Ensure mosquitto is installed
+  ansible.builtin.apt:
+    name: mosquitto
+- name: Ensure main configuraton file is deployed
+  ansible.builtin.copy:
+    content: "{{ mosquitto__mosquitto_conf_content }}"
+    dest: /etc/mosquitto/mosquitto.conf
+    mode: 0644
+    owner: root
+    group: root
+  notify: Restart mosquitto
+- name: Ensure all additional configuraton files are deployed
+  ansible.builtin.copy:
+    content: "{{ item.content }}"
+    dest: /etc/mosquitto/conf.d/{{ item.name }}.conf
+    mode: 0644
+    owner: root
+    group: root
+  loop: "{{ mosquitto__configs }}"
+  notify: Restart mosquitto
+- name: Ensure mosquitto service is enabled and started
+  ansible.builtin.systemd:
+    service: mosquitto.service
+    enabled: true
+    state: started