Clear the backup server list when a Nomad heartbeat arives with servers
Clear the backup server list when a Nomad heartbeat arives with servers

If Nomad is heartbeating during a transition from using backup servers
to Nomad servers, make Nomad the canonical source of servers and flush
the list of servers populated from Consul.

diptanu/nomad,diptanu/nomad,dvusboy/nomad,Ashald/nomad,novilabs/nomad,mattyr/nomad,frundh/nomad,dvusboy/nomad,burdandrei/nomad,martin416/nomad,martin416/nomad,martin416/nomad,nak3/nomad,martin416/nomad,nak3/nomad,jorgemarey/nomad,burdandrei/nomad,nak3/nomad,achanda/nomad,xytis/nomad,dvusboy/nomad,frundh/nomad,hooklift/nomad,kmalec/nomad,barnardb/nomad,nak3/nomad,hooklift/nomad,kmalec/nomad,dbresson/nomad,novilabs/nomad,diptanu/nomad,martin416/nomad,frundh/nomad,hooklift/nomad,hooklift/nomad,mattyr/nomad,mattyr/nomad,mattyr/nomad,jorgemarey/nomad,achanda/nomad,mattyr/nomad,diptanu/nomad,diptanu/nomad,barnardb/nomad,hashicorp/nomad,dvusboy/nomad,mattyr/nomad,novilabs/nomad,dbresson/nomad,jorgemarey/nomad,dbresson/nomad,kmalec/nomad,xytis/nomad,hashicorp/nomad,novilabs/nomad,hashicorp/nomad,achanda/nomad,dbresson/nomad,diptanu/nomad,barnardb/nomad,burdandrei/nomad,frundh/nomad,kmalec/nomad,xytis/nomad,burdandrei/nomad,Ashald/nomad,hooklift/nomad,hashicorp/nomad,dbresson/nomad,kmalec/nomad,xytis/nomad,kmalec/nomad,Ashald/nomad,nak3/nomad,dbresson/nomad,jorgemarey/nomad,kmalec/nomad,frundh/nomad,nak3/nomad,barnardb/nomad,diptanu/nomad,achanda/nomad,burdandrei/nomad,dvusboy/nomad,martin416/nomad,jorgemarey/nomad,Ashald/nomad,dvusboy/nomad,barnardb/nomad,xytis/nomad,Ashald/nomad,jorgemarey/nomad,frundh/nomad,nak3/nomad,Ashald/nomad,achanda/nomad,barnardb/nomad,jorgemarey/nomad,hooklift/nomad,xytis/nomad,dvusboy/nomad,dbresson/nomad,Ashald/nomad,hashicorp/nomad,frundh/nomad,achanda/nomad,mattyr/nomad,burdandrei/nomad,burdandrei/nomad,hashicorp/nomad,xytis/nomad,barnardb/nomad,martin416/nomad,novilabs/nomad,novilabs/nomad,achanda/nomad,hooklift/nomad,novilabs/nomad