Modified event_utils to assign node_id and fqdn of disconnected node
Modified event_utils to assign node_id and fqdn of disconnected node

If node goes down or peer is disconnected, the event_utils should raise
the alert with disconnected node_id and fqdn

tendrl-bugid: Tendrl/commons#812

Signed-off-by: GowthamShanmugasundaram <8c664c2cfb272eb6524e212187e1d749ad3db0b4@redhat.com>

Tendrl/commons,r0h4n/commons