This can reduce the test time becuase it avoids sending getattr
request whenever the kernel checks inode permission.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
This is ignored by old teuthology, but used by newer code to tell us when
to generate a product of all directory items.
Signed-off-by: Sage Weil <sage@inktank.com>