fix ovs plugin to work with postgresql
fix ovs plugin to work with postgresql

Validation SQL connection string for postgres was wrong. Compare with
the code section below the patched line, where the correct value is used.

Change-Id: I5f4a221e69dc672b9935bb2104d297e76982b577

hkumarmk/puppet-neutron,cloudbuy/puppet-neutron,arnaudmorinol/puppet-neutron,markvoelker/puppet-neutron,JioCloud/puppet-neutron,redhat-cip/puppet-neutron,varunarya10/puppet-neutron,IPnett/puppet-neutron,IPnett/puppet-neutron,rdo-puppet-modules/puppet-neutron,IPnett/puppet-neutron,fuel-infra/puppet-neutron,hkumarmk/puppet-neutron,CiscoSystems/puppet-neutron,varunarya10/puppet-neutron,larsks/puppet-neutron,NeCTAR-RC/puppet-neutron,redhat-cip/puppet-neutron,markvoelker/puppet-neutron,DarkHorseComics/puppet-neutron,aldavud/puppet-neutron,nhinds/puppet-neutron,fuel-infra/puppet-neutron,trihoangvo/puppet-neutron,plumgrid/puppet-neutron,redhat-cip/puppet-neutron,rdo-puppet-modules/puppet-neutron,aldavud/puppet-neutron,plumgrid/puppet-neutron,NeCTAR-RC/puppet-neutron,openstack/puppet-neutron,CiscoSystems/puppet-neutron,CiscoSystems/puppet-neutron,JioCloud/puppet-neutron,JioCloud/puppet-neutron,larsks/puppet-neutron,hkumarmk/puppet-neutron,cloudbuy/puppet-neutron,openstack/puppet-neutron,DarkHorseComics/puppet-neutron,aquto/puppet-neutron,cloudbuy/puppet-neutron,nhinds/puppet-neutron,arnaudmorinol/puppet-neutron,trihoangvo/puppet-neutron,NeCTAR-RC/puppet-neutron,rdoxenham/puppet-neutron,fuel-infra/puppet-neutron,aldavud/puppet-neutron,aquto/puppet-neutron,rdoxenham/puppet-neutron