Fix var-naming lint: use systemd_exporter_ prefix for role variables

ansible/roles/systemd_exporter/tasks/main.yml

@@ -20,36 +20,41 @@
 - name: Check if systemd_exporter binary exists
   ansible.builtin.stat:
     path: /usr/local/bin/systemd_exporter
-  register: _systemd_exporter_bin
+  register: systemd_exporter_bin
 
 - name: Get installed version
   ansible.builtin.command: /usr/local/bin/systemd_exporter --version
-  register: _systemd_exporter_installed_version
+  register: systemd_exporter_installed_version
   changed_when: false
   failed_when: false
-  when: _systemd_exporter_bin.stat.exists
+  when: systemd_exporter_bin.stat.exists
 
-- name: Set architecture and release facts
+- name: Set architecture fact
   ansible.builtin.set_fact:
-    _sde_arch: >-
+    systemd_exporter_arch: >-
       {{ ansible_architecture
          | regex_replace('x86_64', 'amd64')
          | regex_replace('aarch64', 'arm64') }}
 
-- name: Set release name
+- name: Set release and URL facts
   ansible.builtin.set_fact:
-    _sde_release: "systemd_exporter-{{ systemd_exporter_version }}.linux-{{ _sde_arch }}"
-    _sde_base_url: "https://github.com/prometheus-community/systemd_exporter"
+    systemd_exporter_release: >-
+      systemd_exporter-{{ systemd_exporter_version }}.linux-{{ systemd_exporter_arch }}
+    systemd_exporter_base_url: >-
+      https://github.com/prometheus-community/systemd_exporter
 
 - name: Download and install systemd_exporter
   when: >-
-    not _systemd_exporter_bin.stat.exists or
+    not systemd_exporter_bin.stat.exists or
     systemd_exporter_version not in
-    (_systemd_exporter_installed_version.stdout | default(''))
+    (systemd_exporter_installed_version.stdout | default(''))
   block:
     - name: Download systemd_exporter tarball
       ansible.builtin.get_url:
-        url: "{{ _sde_base_url }}/releases/download/v{{ systemd_exporter_version }}/{{ _sde_release }}.tar.gz"
+        url: >-
+          {{ systemd_exporter_base_url }}/releases/download/v{{
+          systemd_exporter_version }}/{{
+          systemd_exporter_release }}.tar.gz
         dest: /tmp/systemd_exporter.tar.gz
         mode: '0644'
 
@@ -61,7 +66,7 @@
 
     - name: Install systemd_exporter binary
       ansible.builtin.copy:
-        src: "/tmp/{{ _sde_release }}/systemd_exporter"
+        src: "/tmp/{{ systemd_exporter_release }}/systemd_exporter"
         dest: /usr/local/bin/systemd_exporter
         mode: '0755'
         owner: root
@@ -75,7 +80,7 @@
         state: absent
       loop:
         - /tmp/systemd_exporter.tar.gz
-        - "/tmp/{{ _sde_release }}"
+        - "/tmp/{{ systemd_exporter_release }}"
 
 - name: Deploy systemd_exporter service file
   ansible.builtin.template: