Better zeronet daemon replacement

src/freedombone-image-mesh

 }
 
 function configure_zeronet {
-    sed -i "s|replace.local|P${PEER_ID}.local|g" /etc/systemd/system/zeronet.service
+    sed -i "s|ExecStart=.*|ExecStart=/usr/bin/python zeronet.py --ip_external P${PEER_ID}.local --trackers_file /opt/zeronet/bootstrap|g" /etc/systemd/system/zeronet.service
     echo $"zeronet daemon updated to P${PEER_ID}.local" >> $INSTALL_LOG
 }