LU-7446 clio: lov_io_init() should return error code

LU-7446 clio: lov_io_init() should return error code

lov_io_init_empty/release() should returns error code instead of
true on error case.

Fault IO need handle restart in the case of accessing HSM released
file.

Add a test case.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Change-Id: I4953c12c1e9b82a16aed9b8b1e3fe6e38d783b24
Reviewed-on: http://review.whamcloud.com/17240
Tested-by: Jenkins
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>