mgmt/glusterd: Avoid creating multiple destination brickinfo during replace-brick
mgmt/glusterd: Avoid creating multiple destination brickinfo during replace-brick

Signed-off-by: Vijay Bellur <vijay@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 2084 ([3.1.1qa5] : replace-brick fails to migrate data when migration from same hostname)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2084

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster