The commit: e5848d39 <netdev_move_by_index: support wlan> only
made netdev_move_by_name support wlan, instead of netdev_move_by_index.

Given netdev_move_by_name is a wrapper of netdev_move_by_index, so here
replacing all of the call to lxc_netdev_move_by_index with lxc_netdev_move_by_name
to let lxc-start support wlan phys.
Signed-off-by: fupan li <fupan.li@windriver.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>