Ignore DB requests from down/deleted peers.
Ignore DB requests from down/deleted peers.

The old code used to add a BgpRoute from BgpTable::Input when we
received a add/change request. BgpTable::InputCommon would ignore
the request and not add a BgpPath if the request was from a peer
that's down/deleted.  This could create a scenario where we have
a BgpRoute without any BgpPaths.

Move the check for down/deleted peer from BgpTable::InputCommon
to BgpTable::Input.

Thanks to Prakash for identifying this scenario.

numansiddique/contrail-controller,sajuptpm/contrail-controller,Juniper/contrail-dev-controller,rombie/contrail-controller,varunarya10/contrail-controller,codilime/contrail-controller,reiaaoyama/contrail-controller,hthompson6/contrail-controller,aranjan7/contrail-controller-aranjan,cloudwatt/contrail-controller,eonpatapon/contrail-controller,vpramo/contrail-controller,rombie/contrail-controller,numansiddique/contrail-controller,facetothefate/contrail-controller,facetothefate/contrail-controller,facetothefate/contrail-controller,eonpatapon/contrail-controller,varunarya10/contrail-controller,vpramo/contrail-controller,vpramo/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,Juniper/contrail-controller-test,Juniper/contrail-controller-test,varunarya10/contrail-controller,rombie/contrail-controller,Juniper/contrail-dev-controller,srajag/contrail-controller,vmahuli/contrail-controller,varunarya10/contrail-controller,nischalsheth/contrail-controller,hthompson6/contrail-controller,eonpatapon/contrail-controller,vmahuli/contrail-controller,srajag/contrail-controller,DreamLab/contrail-controller,reiaaoyama/contrail-controller,sajuptpm/contrail-controller,nischalsheth/contrail-controller,aranjan7/contrail-controller-aranjan,tcpcloud/contrail-controller,reiaaoyama/contrail-controller,nischalsheth/contrail-controller,DreamLab/contrail-controller,tcpcloud/contrail-controller,vmahuli/contrail-controller,numansiddique/contrail-controller,srajag/contrail-controller,tcpcloud/contrail-controller,Juniper/contrail-controller-test,codilime/contrail-controller,eonpatapon/contrail-controller,vpramo/contrail-controller,cloudwatt/contrail-controller,eonpatapon/contrail-controller,codilime/contrail-controller,DreamLab/contrail-controller,eonpatapon/contrail-controller,reiaaoyama/contrail-controller,Juniper/contrail-dev-controller,aranjan7/contrail-controller-aranjan,srajag/contrail-controller,rombie/contrail-controller,codilime/contrail-controller,cloudwatt/contrail-controller,reiaaoyama/contrail-controller,facetothefate/contrail-controller,codilime/contrail-controller,nischalsheth/contrail-controller,tcpcloud/contrail-controller,DreamLab/contrail-controller,rombie/contrail-controller,Juniper/contrail-controller-test,aranjan7/contrail-controller-aranjan,hthompson6/contrail-controller,aranjan7/contrail-controller-aranjan,codilime/contrail-controller,vmahuli/contrail-controller,srajag/contrail-controller,varunarya10/contrail-controller,cloudwatt/contrail-controller,vpramo/contrail-controller,hthompson6/contrail-controller,DreamLab/contrail-controller,hthompson6/contrail-controller,sajuptpm/contrail-controller,vmahuli/contrail-controller,nischalsheth/contrail-controller,cloudwatt/contrail-controller,nischalsheth/contrail-controller,facetothefate/contrail-controller,tcpcloud/contrail-controller,Juniper/contrail-controller-test,nischalsheth/contrail-controller,sajuptpm/contrail-controller,Juniper/contrail-dev-controller,Juniper/contrail-dev-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,sajuptpm/contrail-controller,numansiddique/contrail-controller,numansiddique/contrail-controller,sajuptpm/contrail-controller,tcpcloud/contrail-controller