cluster/afr: Returning single and list of node uuids from AFR

Problem:
The change in afr to return list of node uuids was causing problems
with geo-rep.

Fix:
This patch will allow to get the single node uuid as it was doing
before with the key "GF_XATTR_NODE_UUID_KEY", and will also allow
to get the list of node uuids by using a new key
"GF_XATTR_LIST_NODE_UUIDS_KEY". This will solve the problem with
geo-rep and any other feature which were depending on this.

> Change-Id: I09885dac6dfca127be94b708470c8c2941356f9a
> BUG: 1462790
> Signed-off-by: karthik-us <ksubrahm@redhat.com>
> Reviewed-on: https://review.gluster.org/17576
> Smoke: Gluster Build System <jenkins@build.gluster.org>
> Reviewed-by: Ravishankar N <ravishankar@redhat.com>
> Reviewed-by: Kotresh HR <khiremat@redhat.com>
> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us>

(cherry picked from commit 475ec9928ef96b63a0bfa859a9ae68709275033c)

Change-Id: I6f6e8320a1eb5909ef601e23f8a8d3499807e319
BUG: 1463250
Signed-off-by: karthik-us <ksubrahm@redhat.com>
Reviewed-on: https://review.gluster.org/17602
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>

0 files changed, 0 insertions, 0 deletions