..and remove it from bad tests list.

Backport of  http://review.gluster.org/#/c/12936/
Problem:
https://build.gluster.org/job/rackspace-netbsd7-regression-triggered/12516/consoleFull

++ SETUP_LOOP /d/backends/brick1
++ '[' 1 '!=' 1 ']'
++ backend=/d/backends/brick1
++ case ${OSTYPE} in
+++ awk -F: '/not in use/{print $1; exit}'
+++ vnconfig -l
vnconfig: VNDIOCGET: Bad file descriptor
++ vnd=
++ '[' x = x ']'
++ echo 'no more vnd'
no more vnd
++ return 1

Fix:
TEST the return value of SETUP_LOOP.
Also added EXIT_EARLY to the test case because there is no point in
continuing the test when setting the bricks fail.

Change-Id: Idca269650385765a13be070186dc0b7eb2e5fda1
BUG: 1290658
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/12947
Reviewed-by: Michael Adam <obnox@samba.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>

Back-port of http://review.gluster.org/#/c/12096/

Change-Id: I06de4f555e66fac2594676572c8f8a4ee08f8131
BUG: 1259659
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/12098
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>

Backport of http://review.gluster.org/#/c/11864/

This is a test-case for BZ 1251380

Change-Id: Icbde8d17c823a3f2c98056c14a75f0ef5227b848
BUG: 1251380
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
(cherry picked from commit f550efa2879c02dec4c8f6876a94fcfd95b5bf91)
Reviewed-on: http://review.gluster.org/11900
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Raghavendra Talur <rtalur@redhat.com>