LU-246 Add a barrier for recovery completion for conf-sanity

LU-246 Add a barrier for recovery completion for conf-sanity

* Make sure client connection finished before each conf-sanity test
* Put test_58 ahead of test_59
* Properly finalize some tests with 'writeconf'

Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: Ie2592954b54c3d5fbb275b38ad61c6986032fc5b
Bugzilla: 18779
Reviewed-on: http://review.whamcloud.com/476
Tested-by: Hudson
Reviewed-by: Yu Jian <yujian@whamcloud.com>
Reviewed-by: Niu Yawei <niu@whamcloud.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>