== sanity test 413k: QoS mkdir exclude prefixes ========== 06:05:30 (1788516330)
lmv.lustre-clilmv-ffff8a9b2c10b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8a9b2c10b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8a9b2c10b800.qos_exclude_prefixes=_temporary