MFC r295471:

MFC r295471:

  Add new rc.conf parameter "jail_reverse_stop"

  When a user defines "jail_list" in rc.conf the jails are started in the
  order defined. Currently the jails are not are stopped in reverse order
  which may break dependencies between jails/services and prevent a clean
  shutdown. The new parameter "jail_reverse_stop" will shutdown jails in
  "jail_list" in reverse order when set to "YES".

  Please note that this does not affect manual invocation of the jail rc
  script. If a user runs the command

    # service jail stop jail1 jail2 jail3

  the jails will be stopped in exactly the order specified regardless of
  jail_reverse_stop being defined in rc.conf.

MFC r295568:

  Document the new jail_reverse_stop parameter

  While here clean up the documentation for jail_list

PR:		196152
Submitted by:	feld

git-svn-id: svn://svn.freebsd.org/base/stable/10@298852 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f