LU-9679 various: use OBD_ALLOC_PTR_ARRAY() and others

LU-9679 various: use OBD_ALLOC_PTR_ARRAY() and others

Use:
  OBD_ALLOC_PTR_ARRAY
  OBD_FREE_PTR_ARRAY
  OBD_ALLOC_PTR_ARRAY_LARGE
  OBD_FREE_PTR_ARRAY_LARGE

for allocating and freeing arrays in various modules.

Test-Parameters: trivial
Signed-off-by: Mr NeilBrown <neilb@suse.de>
Change-Id: I0c65759e99fde15168f190ea74cd88b3cb01f667
Reviewed-on: https://review.whamcloud.com/38250
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>