Fix deprecated opt in haproxy driver

If Neutron was updated from Havana, lbaas config file defines user_group
and loadbalancer_state_path in default section but since Icehouse these
settings were moved to haproxy section.
This patch adds DEFAULT group to DeprecatedOpt.

Change-Id: Ic92d4bc81ff6a3b16799414d17ac52e7a4801796
Closes-bug: #1349767
Check that router info is set before calling _update_arp_entry

Change-Id: Ieec6fb01a7d48bed1042114c27527fe6ec2555e0
Closes-bug: #1350028
Merge "Fix deprecated opt in haproxy driver"
Merge "Check that router info is set before calling _update_arp_entry"