features/snapview-client: put local back to mempool after unwind

Change-Id: I3a709a835b21edf757ee5a1cd04cd9d1c59201dc
BUG: 1111552
Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-on: http://review.gluster.org/8128
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>