Bug 1220052

+++ This bug was initially created as a clone of Bug #1211562 +++

Description of problem:
======================
The response user gets after executing a attach-tier or detach-tier right now are quite ambigous. They talk about brick rather than the tier.
Eg: on a attach tier it says "add-brick is success"
[root@yarrow ~]# gluster v attach-tier ec_vol1 yarrow:/yarrow_ssd_75G_2/ec_vol1 rhs-client6:/brick15/ec_vol1 force
volume add-brick: success
[root@yarrow ~]# gluster v info ec_vol1


It should instead say, attaching of tier to <volname> is successful


same with detach tier, it say remove-brick is success

Need to take care even when the command fails, like it should be detach-tier fails rather than remove-brick fails


Version-Release number of selected component (if applicable):
============================================================
[root@yarrow ~]# gluster --version
glusterfs 3.7dev built on Apr  8 2015 17:57:45
Repository revision: git://git.gluster.com/glusterfs.git
Copyright (c) 2006-2011 Gluster Inc. <http://www.gluster.com>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of GlusterFS under the terms of the GNU General Public License.
[root@yarrow ~]# rpm -qa|grep gluster
glusterfs-cli-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-server-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-libs-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-fuse-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-api-3.7dev-0.994.gitf522001.el6.x86_64



How reproducible:
=================
always and easily


Steps to Reproduce:
==================
1.create a regular volume
2.attach a tier, the reponse user gets talks abt brick rather than tier
3.same with detaching the tier

--- Additional comment from Anand Avati on 2015-04-17 05:01:13 EDT ---

REVIEW: http://review.gluster.org/10284 (cli/tiering: Enhance cli output for tiering) posted (#1) for review on master by mohammed rafi  kc (rkavunga)

--- Additional comment from Anand Avati on 2015-05-02 08:15:10 EDT ---

REVIEW: http://review.gluster.org/10284 (cli/tiering: Enhance cli output for tiering) posted (#2) for review on master by mohammed rafi  kc (rkavunga)

--- Additional comment from Anand Avati on 2015-05-08 18:12:26 EDT ---

REVIEW: http://review.gluster.org/10284 (cli/tiering: Enhance cli output for tiering) posted (#5) for review on master by mohammed rafi  kc (rkavunga)

--- Additional comment from Anand Avati on 2015-05-09 00:27:57 EDT ---

COMMIT: http://review.gluster.org/10284 committed in master by Vijay Bellur (vbellur) 
------
commit 2676c402bc47ee89b763393e496a013e82d76e54
Author: Mohammed Rafi KC <rkavunga>
Date:   Sat May 2 17:31:07 2015 +0530

    cli/tiering: Enhance cli output for tiering
    
    Fix for handling cli output for attach-tier and
    detach-tier
    
    Change-Id: I4d17f4b09612754fe1b8cec6c2e14927029b9678
    BUG: 1211562
    Signed-off-by: Mohammed Rafi KC <rkavunga>
    Reviewed-on: http://review.gluster.org/10284
    Reviewed-by: Dan Lambright <dlambrig>
    Tested-by: Gluster Build System <jenkins.com>
    Tested-by: NetBSD Build System
    Reviewed-by: Vijay Bellur <vbellur>