code: def choose_init(module):
      
  
      if module.normalized_release.int_major < 7:
          return 'sysvinit'
  
      if not module.conn.remote_module.path_exists("/usr/lib/systemd/system/ceph.target"):
          return 'sysvinit'
  
      if is_systemd(module.conn):
          return 'systemd'
  
      return 'systemd'
docs: Select a init system
  
      Returns the name of a init system (upstart, sysvinit ...).