Wazuh log monitor handler fixture

[Rebits]

Description

Currently, the logic related to the creation and truncation of the ossec.log is placed inside the restart daemons fixtures. For example

@pytest.fixture(scope='module')
def restart_logcollector(get_configuration, request):
    """Reset log file and start a new monitor."""
    control_service('stop', daemon=DAEMON_NAME)
    truncate_file(LOG_FILE_PATH)
    file_monitor = FileMonitor(LOG_FILE_PATH)
    setattr(request.module, 'wazuh_log_monitor', file_monitor)
    control_service('start', daemon=DAEMON_NAME)

This is problematic due to the following reasons:

• Every fixture should be as encapsulated as possible.
• It required the get_configuration fixture to work. The ossec.log file should be truncated after tests finish.

For these reasons, It should convenient to create a unique fixture for this task.