Fix for OPENSTACK-1251
Fix for OPENSTACK-1251

LBAAS can't handle extensions on subnets.

Change-Id: I33152e61fbb42766d297199da1d5122bb7a7d368
Closes-Bug: OPENSTACK-1251

nuagenetworks/nuage-openstack-neutron,nuagenetworks/nuage-openstack-neutron,naveensan1/nuage-openstack-neutron,naveensan1/nuage-openstack-neutron