add borg backup (#1727)

* add borg backup

* lint fix

* add exlclude patterns

* missed in the #1726 fix for honoroit

* feedback

* Fix indentation

* feedback

* feedback

* feedback

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

roles/matrix-backup-borg/tasks/setup_uninstall.yml

@@ -0,0 +1,41 @@
+---
+- name: Check existence of matrix-backup-borg service
+  stat:
+    path: "{{ matrix_systemd_path }}/matrix-backup-borg.service"
+  register: matrix_backup_borg_service_stat
+
+- name: Ensure matrix-backup-borg is stopped
+  service:
+    name: matrix-backup-borg
+    state: stopped
+    enabled: false
+    daemon_reload: true
+  register: stopping_result
+  when: "matrix_backup_borg_service_stat.stat.exists|bool"
+
+- name: Ensure matrix-backup-borg.service doesn't exist
+  file:
+    path: "{{ matrix_systemd_path }}/matrix-backup-borg.service"
+    state: absent
+  when: "matrix_backup_borg_service_stat.stat.exists|bool"
+
+- name: Ensure matrix-backup-borg.timer doesn't exist
+  file:
+    path: "{{ matrix_systemd_path }}/matrix-backup-borg.timer"
+    state: absent
+  when: "matrix_backup_borg_service_stat.stat.exists|bool"
+
+- name: Ensure systemd reloaded after matrix-backup-borg.service removal
+  service:
+    daemon_reload: true
+  when: "matrix_backup_borg_service_stat.stat.exists|bool"
+
+- name: Ensure Matrix borg paths don't exist
+  file:
+    path: "{{ matrix_backup_borg_base_path }}"
+    state: absent
+
+- name: Ensure borg Docker image doesn't exist
+  docker_image:
+    name: "{{ matrix_backup_borg_docker_image }}"
+    state: absent