Our fsx fork has recently gained a support for the krbd mode - add it
to the test suite. Disable discard ops and randomized striping, both
of which aren't ready yet.
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.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>
