LU-9486 llapi-test: sanity test_27D failure

llapi_layout_test.c - layout template stripe count returns value
LLAPI_LAYOUT_WIDE if it was set -1, returns LLAPI_LAYOUT_DEFAULT if
was set 0.

Test-Parameters: testlist=sanity
Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Change-Id: I32c3944dd3cec36c4907277f96a400ecff6ebc60
Reviewed-on: https://review.whamcloud.com/27057
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Jenkins
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>