lava: There's no connmand-wait-online on NFS

The NFS rootfs does not ship connmand-wait-online, so at the moment
this only produces an error message as the error is ignored:

    ash: connmand-wait-online: not found

Signed-off-by: Emanuele Aina <emanuele.aina@collabora.com>

lava/group-nfs-tpl.yaml

@@ -75,7 +75,7 @@ actions:
       method: {{boot_method}}
       commands: nfs
       transfer_overlay:
-        download_command: sudo mount -o remount,rw / ; connmand-wait-online ; df -h; sh -c 'busybox wget $1 -O -| sudo tar -v -C / -z -x' --
+        download_command: sudo mount -o remount,rw / ; df -h; sh -c 'busybox wget $1 -O -| sudo tar -v -C / -z -x' --
         unpack_command: df -h; echo
       auto_login:
         login_prompt: 'apertis login:'