remove UNIQUE constraint on peername as that was preventing from re-creating the same peername again
remove UNIQUE constraint on peername as that was preventing from re-creating the same peername again

dreibh/planetlab-lxc-plcapi,dreibh/planetlab-lxc-plcapi,dreibh/planetlab-lxc-plcapi,dreibh/planetlab-lxc-plcapi