LU-15009 ofd: continue precreate if LAST_ID is less on MDT

LU-15009 ofd: continue precreate if LAST_ID is less on MDT

It's possible that precreate succeeded on OST, but MDT didn't get the
reply, and assumed failure. In this case, the LAST_ID on MDT is
smaller than that on OST, instead of report error and stop precreate,
it's better to move precreate window forward.

Signed-off-by: Lai Siyao <lai.siyao@whamcloud.com>
Change-Id: Ia6ca418ec0ea6797b7eccc1610879331307fad07
Reviewed-on: https://review.whamcloud.com/44984
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Hongchao Zhang <hongchao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>