Add availability zone to service instance schema
Add availability zone to service instance schema

Change-Id: I0d1365650579488c29cf2d362c874df3c548742d
Partial-Bug: 1342969

numansiddique/contrail-controller,DreamLab/contrail-controller,codilime/contrail-controller,Juniper/contrail-dev-controller,vmahuli/contrail-controller,DreamLab/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller,nischalsheth/contrail-controller,reiaaoyama/contrail-controller,DreamLab/contrail-controller,vpramo/contrail-controller,nischalsheth/contrail-controller,nischalsheth/contrail-controller,tcpcloud/contrail-controller,cloudwatt/contrail-controller,cloudwatt/contrail-controller,vpramo/contrail-controller,tcpcloud/contrail-controller,eonpatapon/contrail-controller,sajuptpm/contrail-controller,varunarya10/contrail-controller,vmahuli/contrail-controller,srajag/contrail-controller,codilime/contrail-controller,numansiddique/contrail-controller,facetothefate/contrail-controller,sajuptpm/contrail-controller,hthompson6/contrail-controller,varunarya10/contrail-controller,facetothefate/contrail-controller,DreamLab/contrail-controller,rombie/contrail-controller,vpramo/contrail-controller,tcpcloud/contrail-controller,eonpatapon/contrail-controller,cloudwatt/contrail-controller,rombie/contrail-controller,Juniper/contrail-dev-controller,srajag/contrail-controller,tcpcloud/contrail-controller,nischalsheth/contrail-controller,srajag/contrail-controller,codilime/contrail-controller,numansiddique/contrail-controller,sajuptpm/contrail-controller,vmahuli/contrail-controller,tcpcloud/contrail-controller,nischalsheth/contrail-controller,DreamLab/contrail-controller,Juniper/contrail-dev-controller,rombie/contrail-controller,rombie/contrail-controller,srajag/contrail-controller,vpramo/contrail-controller,tcpcloud/contrail-controller,hthompson6/contrail-controller,numansiddique/contrail-controller,codilime/contrail-controller,eonpatapon/contrail-controller,nischalsheth/contrail-controller,reiaaoyama/contrail-controller,eonpatapon/contrail-controller,facetothefate/contrail-controller,reiaaoyama/contrail-controller,rombie/contrail-controller,vmahuli/contrail-controller,Juniper/contrail-dev-controller,varunarya10/contrail-controller,vmahuli/contrail-controller,rombie/contrail-controller,codilime/contrail-controller,hthompson6/contrail-controller,codilime/contrail-controller,varunarya10/contrail-controller,srajag/contrail-controller,cloudwatt/contrail-controller,eonpatapon/contrail-controller,Juniper/contrail-dev-controller,varunarya10/contrail-controller,cloudwatt/contrail-controller,reiaaoyama/contrail-controller,reiaaoyama/contrail-controller,vpramo/contrail-controller,nischalsheth/contrail-controller,sajuptpm/contrail-controller,eonpatapon/contrail-controller,hthompson6/contrail-controller,hthompson6/contrail-controller,numansiddique/contrail-controller,eonpatapon/contrail-controller,sajuptpm/contrail-controller,facetothefate/contrail-controller,sajuptpm/contrail-controller,facetothefate/contrail-controller