new_contents: from ceph_deploy.util import wrappers
  
  
  def apt(conn, logger, package, *a, **kw):
      cmd = [
          'env',
          'DEBIAN_FRONTEND=noninteractive',
          'apt-get',
          '-q',
          'install',
          '--assume-yes',
          package,
      ]
      return wrappers.check_call(
          conn,
          logger,
          cmd,
          *a,
          **kw
      )
  
  
  def apt_update(conn, logger):
      cmd = [
          'apt-get',
          '-q',
          'update',
      ]
      return wrappers.check_call(
          conn,
          logger,
          cmd,
      )
  
  
  def yum(conn, logger, package, *a, **kw):
      cmd = [
          'yum',
          '-y',
          '-q',
          'install',
          package,
      ]
      return wrappers.check_call(
          conn,
          logger,
          cmd,
          *a,
          **kw
      )
  
  
  def rpm(conn, logger, rpm_args=None, *a, **kw):
      """
      A minimal front end for ``rpm`. Extra flags can be passed in via
      ``rpm_args`` as an iterable.
      """
      rpm_args = rpm_args or []
      cmd = [
          'rpm',
          '-Uvh',
      ]
      cmd.extend(rpm_args)
      return wrappers.check_call(
          conn,
          logger,
          cmd,
          *a,
          **kw
      )
  
subject: add helpers for package managers