LU-13429 lov: lov_io_sub_init()) ASSERTION

LU-13429 lov: lov_io_sub_init()) ASSERTION

The assertion is_index_within_mirror() in lov_io_sub_init() should
only be applied for a FLR file, since a plain file does not initialize
the relevant FLR fields of the layout structure.

Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: I0d6ff505d789c76e7912aa08491146706b5316bc
Reviewed-on: https://review.whamcloud.com/38169
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Wang Shilong <wshilong@ddn.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>