Use nvme_ns_construct()/nvme_ns_destruct() for each subtest.
This is what lib/nvme uses when creating/deleting namespaces,
so it makes sense to use the same functions in the unit test.
If we explicitly call memset(), we might hide real problems,
since e.g. nvme_ns_destruct() does not clear all struct members
in struct spdk_nvme_ns.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Change-Id: Ia0ffce3d0a29088282e9fc8fc5413b98d1fe7c63
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4264
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>