Correcting query in the  where clause

from "a & b | c"

to "a & (b | c)"

where "a" is the condition to join the gf_file_tb and gf_flink_tb
through gfids

"b" is the condition for the write heat
and "c" is the condition for read heat

Backport of http://review.gluster.org/12823

> Change-Id: I99226d82b0efb68fbef3a40f02b215bb2b4370d6
> BUG: 1286656
> Signed-off-by: Joseph Fernandes <josferna@redhat.com>
> Signed-off-by: Dan Lambright <dlambrig@redhat.com>
> Reviewed-on: http://review.gluster.org/12823
> Tested-by: NetBSD Build System <jenkins@build.gluster.org>
> Tested-by: Gluster Build System <jenkins@build.gluster.com>
Signed-off-by: Joseph Fernandes <josferna@redhat.com>

Change-Id: I70533c8589a6cd67e8737e110af0a23abed9013d
BUG: 1287583
Reviewed-on: http://review.gluster.org/12868
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
Tested-by: Dan Lambright <dlambrig@redhat.com>

1) if record-counters is set to off
   check if both the frequency thresholds are non-zero, then pop
   an error message, with volume set failed.
2) if record-counters is set to on
   check if both the frequency thresholds are zero, then pop
   an note, but volume set is not failed.
3) If any of the frequency thresholds are set to a non-zero value,
   switch record-counters on, if not already on
4) If both the frequency thresholds are set to zero,
   switch record-counters off, if not already off

NOTE: In this fix we have
1) removed unnecessary ctr vol set options.
2) changed  ctr_hardlink_heal_expire_period to ctr_lookupheal_link_timeout

Backport of  http://review.gluster.org/12780

> Change-Id: Ie7ccfd3f6e021056905a79de5a3d8f199312f315
> BUG: 1286346
> Signed-off-by: Joseph Fernandes <josferna@redhat.com>
> Signed-off-by: Dan Lambright <dlambrig@redhat.com>
> Reviewed-on: http://review.gluster.org/12780
> Tested-by: Gluster Build System <jenkins@build.gluster.com>
> Tested-by: NetBSD Build System <jenkins@build.gluster.org>
> Signed-off-by: Joseph Fernandes <josferna@redhat.com>

Change-Id: I35621ed3cc1ad20a75ef16e0b95453b8c6120852
BUG: 1287560
Signed-off-by: Joseph Fernandes <josferna@redhat.com>
Reviewed-on: http://review.gluster.org/12849
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
Tested-by: Dan Lambright <dlambrig@redhat.com>