otherwise the bluestore tests will fail with failures like
qa/workunits/cephtool/test.sh:1343: test_mon_osd_pool: ceph osd pool set ec_test allow_ec_overwrites true
Error EINVAL: pool must only be stored on bluestore for scrubbing to work: osd.1 uses filestore
qa/workunits/cephtool/test.sh:1343: test_mon_osd_pool: return 1