afr: enable metadata self-heal by default
afr: enable metadata self-heal by default

Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>

BUG: 1467 (enable the metadata-change-log by default)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1467

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster