This patch adds new function which is used to check if blob can be removed when requested. Signed-off-by: Maciej Szwed <maciej.szwed@intel.com> Change-Id: Iafa82fba9bf67ffd15cf639f4665087f054b6b7d Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/452242 Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>