v2 Prevent removal of trusted.gfid xattr
v2 Prevent removal of trusted.gfid xattr

Signed-off-by: shishir gowda <shishirng@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 2461 (remove xattr of trusted.gfid succeeds)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2461

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster