Initialise med value in XMPP message sent.
Initialise med value in XMPP message sent.

Problem:
Uninitialized value in agent resulting in arbitrary values sent to CN.

Solution:
Initialize it to 0 in agent even though agent does not populate it.

Closes-bug: 1523568
(cherry picked from commit 0305f2b3645dcb050828464974cbda52943eb171)

Conflicts:
	src/vnsw/agent/controller/controller_peer.cc
Change-Id: I2c3729dbb741f04b90ac42039b187e07be3e9d43

nischalsheth/contrail-controller,tcpcloud/contrail-controller,rombie/contrail-controller,codilime/contrail-controller,codilime/contrail-controller,tcpcloud/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller,sajuptpm/contrail-controller,rombie/contrail-controller,sajuptpm/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,codilime/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller,sajuptpm/contrail-controller,rombie/contrail-controller,tcpcloud/contrail-controller,eonpatapon/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,nischalsheth/contrail-controller,nischalsheth/contrail-controller,tcpcloud/contrail-controller,nischalsheth/contrail-controller,codilime/contrail-controller,eonpatapon/contrail-controller,tcpcloud/contrail-controller,tcpcloud/contrail-controller,sajuptpm/contrail-controller,sajuptpm/contrail-controller,codilime/contrail-controller,codilime/contrail-controller,nischalsheth/contrail-controller,sajuptpm/contrail-controller