Add eth Interface on VM

To add an extra network interface on a virtual machine, you need to add/follow these steps:

On the server itself

cat /etc/sysconfig/network-scripts/ifcfg-eth2
DEVICE=eth2
ONBOOT=yes
TYPE=Ethernet
BOOTPROTO=static
#IPADDR=10.94.50.137
#NETMASK=255.255.255.128
IPADDR=192.168.3.249
NETMASK=255.255.255.0
PEERDNS=no

add this part (verify MAC-address and VLAN name) on the KV machine:
cat /var/lib/libvirt/gfs2/xml/VM.fqdn.xml

<interface type='bridge'>
 <mac address='52:54:00:ae:59:0c'/>
  <source bridge='brdeppci'/>
  <model type='virtio'/>
</interface>

Restart the server from the KV (and reload config):

pcs resource disable VM.fqdn
pcs status
VM.fqdn (ocf:: heartbeat:VirtualDomain): Started KVNAME (disabled)
pcs resource enable VM.fqdn