blob_create_snapshot_power_failure() test always attempted
snapshot creation until the snapshot did open.
Which meant that on bs reload after dirty shutdown,
the original blob might be in unrecoverable state.
UT did not verify create call beyond that point.
Next patch will stop after snapshot is possible to be opened,
AND the spdk_bs_create_snapshot() returned success.
This patch makes it easier to recreate same starting
conditions after snapshot did not open.
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I1901b29a8319b2203a855e7879821ed3850f4917
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/1261
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>