features/index: Minor improvement in log message.

Change-Id: Ic4f39785dab5ad64def4c06d7bd2f2dec09e19ab
BUG: 1045690
Signed-off-by: Vijay Bellur <vbellur@redhat.com>
Reviewed-on: http://review.gluster.org/6606
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>