Refactor sys-ctl-rpr-docker-soft role to use standalone Python script with argparse and unittests

- Replace Jinja2 template (script.py.j2) with raw Python script (files/script.py)
- Add argparse options: --manipulation, --manipulation-string, --timeout
- Implement timeout handling in wait_while_manipulation_running
- Update systemd ExecStart/ExecStartPre handling in tasks/01_core.yml
- Remove obsolete systemctl.service.j2 and script.py.j2 templates
- Add unittest suite under tests/unit/roles/sys-ctl-rpr-docker-soft/files/test_script.py
- Mock docker and systemctl calls in tests for safe execution

Reference: ChatGPT conversation (see https://chatgpt.com/share/68ad770b-ea84-800f-b378-559cb61fc43a)

roles/sys-ctl-rpr-docker-soft/tasks/01_core.yml

@@ -6,6 +6,10 @@
 - include_role:
     name: sys-service
   vars:
-    system_service_on_calendar:   "{{SYS_SCHEDULE_REPAIR_DOCKER_SOFT}}"
-    system_service_timer_enabled:  true
-    system_service_tpl_on_failure: "{{ SYS_SERVICE_ON_FAILURE_COMPOSE }}"
+    system_service_on_calendar:         "{{ SYS_SCHEDULE_REPAIR_DOCKER_SOFT }}"
+    system_service_timer_enabled:       true
+    system_service_tpl_on_failure:      "{{ SYS_SERVICE_ON_FAILURE_COMPOSE }}"
+    system_service_tpl_exec_start_pre:  "/usr/bin/python {{ PATH_SYSTEM_LOCK_SCRIPT }} {{ SYS_SERVICE_GROUP_MANIPULATION | join(' ')  }} --ignore {{ SYS_SERVICE_GROUP_CLEANUP| join(' ') }} {{ SYS_SERVICE_REPAIR_DOCKER_SOFT }} --timeout '{{ SYS_TIMEOUT_HEAL_DOCKER }}'"
+    system_service_tpl_exec_start: >
+      /bin/sh -c '{{ system_service_script_exec }} --manipulation-string "{{ SYS_SERVICE_GROUP_MANIPULATION | join(" ") }}" {{ PATH_DOCKER_COMPOSE_INSTANCES }}'
+