Fix bug 673 for read physical configuration failure in VTN coordinator during opendaylight reboot

Change-Id: I5221f23dae6e1c111dc388616340e225640d8356
Signed-off-by: kamatchi <kamatchi-l@hcl.com>
Merge "Fix bug 673 for read physical configuration failure in VTN coordinator during opendaylight reboot"