collie: show progress in an output of node recovery

This patch lets collie output recovery progress. Below is an example
of a new output.

  Id   Host:Port         V-Nodes       Zone       Progress
   0   10.68.13.1:7000        64   17646602       56.3%
   1   10.68.13.2:7000        64   34423818       37.2%
   2   10.68.13.3:7000        64   51201034       18.1%
   3   10.68.13.4:7000        64   67978250       68.9%
   4   10.68.13.5:7000        64   84755466        3.9%
   5   10.68.13.6:7000        64  101532682       52.6%
   6   10.68.13.7:7000        64  118309898       77.9%
   7   10.68.13.8:7000        64  135087114       38.9%
   8   10.68.13.9:7000        64  151864330        8.7%
   9   10.68.13.10:7000       64  168641546       97.1%
  10   10.68.13.11:7000       64  185418762        1.1%
  11   10.68.13.12:7000       64  202195978       25.6%

Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
Signed-off-by: Liu Yuan <namei.unix@gmail.com>
collie: support raw output in node recovery

-r option is required for machine friendly output.

Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
Signed-off-by: Liu Yuan <namei.unix@gmail.com>