ironic.conf.sample not displaying deprecated configs

[Ruby Loo]

ironic.conf.sample is only showing the deprecated configs whose names have changed, eg:

    # Size of executor thread pool. (integer value)
    # Deprecated group/name - [DEFAULT]/rpc_thread_pool_size
   #executor_thread_pool_size=64

For configs where the name hasn't changed but the group has, nothing is shown. Eg, the inspector-related configs were moved from [discoverd] to [inspector]:

    # whether to enable inspection using ironic-inspector (boolean
    # value)
    #enabled=false

We should show the deprecated group (and name). Eg:

    # whether to enable inspection using ironic-inspector (boolean
    # value)
    # Deprecated group/name - [discoverd]/enabled
    #enabled=false

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/249912

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/249912
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=9433f6f3b7670682ede17e5d3b6ddba79cff000a
Submitter: Jenkins
Branch: master

commit 9433f6f3b7670682ede17e5d3b6ddba79cff000a
Author: Ruby Loo <email address hidden>
Date: Wed Nov 25 16:54:49 2015 +0000

    Add deprecated config info in ironic.conf.sample

    ironic.conf.sample shows deprecated configs that have been
    moved to different groups and renamed. Deprecated configs are
    not being indicated if they moved to a different group but
    did not get renamed.

    This fixes it to show all deprecated configs.

    ironic.conf.sample was also updated to reflect other changes
    that have occurred since the last update.

    Change-Id: I608892a9735ecffc2c374330a4f0ee4e12ab6011
    Fixes-Bug: #1519886