== sanity test 413k: QoS mkdir exclude prefixes ========== 19:40:19 (1773618019)
lmv.lustre-clilmv-ffff9315a0de9000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9315a0de9000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9315a0de9000.qos_exclude_prefixes=_temporary