fix build break in Ubuntu 16.04
fix build break in Ubuntu 16.04

Change-Id: Id31d79af548e5f48d0d7c002d3a8a927f34c7c10
Signed-off-by: Stuart <8feb523815e6b0d182bed046b706a36211817399@emc.com>
Reviewed-on: https://gerrit.mozy.lab.emc.com/106131
Reviewed-by: Jenkins <49695b0f9c673fd73dab0ff3f84b5ced9302cc6a@mozy.com>
Reviewed-by: Kevin Cai <1855c94a87a57fea8c6ab3706ebae134b80255c2@emc.com>

mozy/mordor,mozy/mordor,mozy/mordor