router: Fixes #2544 run passwd server on dhcpserver IP on rVR (#2635)
router: Fixes #2544 run passwd server on dhcpserver IP on rVR (#2635)

This ensures that password server runs on the dhcpserver identifier
IP which is the not the VRRP virtual (10.1.1.1) IP by default but
the actual ip of the interface. When dhcp client discovery is made,
the `dhcp-server-identifier` contains the non VIP address that is
used by password reset script to query guest VM password.

Signed-off-by: Rohit Yadav <902b9eb5dd62819678163bd5e00fbf0cbc7c264b@shapeblue.com>
jcshen007/cloudstack,GabrielBrascher/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,jcshen007/cloudstack,DaanHoogland/cloudstack,GabrielBrascher/cloudstack,GabrielBrascher/cloudstack,wido/cloudstack,jcshen007/cloudstack,DaanHoogland/cloudstack,DaanHoogland/cloudstack,jcshen007/cloudstack,wido/cloudstack,DaanHoogland/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,jcshen007/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,wido/cloudstack,DaanHoogland/cloudstack,GabrielBrascher/cloudstack,wido/cloudstack,jcshen007/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack