qa/suites/crimson-rados-experimental: Test recovery thrash test

qa/suites/crimson-rados-experimental: Test recovery thrash test

https://tracker.ceph.com/issues/67446 is merged, We should be able
to start testing Seastore similar to `crimson-rados/thrash` suite which
uses ceph_test_rados and rados bench.
crimson-rados-experimental is a copy of crimson-rados thrash with only
objectstore changes.
Once the experimental suite is ready, we could add seastore to
crimson-rados/thrash and remove crimson-rados/thrash_seastore_* variants.

See: https://tracker.ceph.com/issues/71237

Signed-off-by: Matan Breizman <mbreizma@redhat.com>