qa/suites/rados: whitelist health warnings

in cephtool/test.sh, we

ceph fs set cephfs inline_data {1,0}

so the health check fails when the test ends, like

mon.a (mon.0) 3498 : cluster [WRN] Health check failed: 1 filesystem
with deprecated feature inline_data (FS_INLINE_DATA_DEPRECATED)" in
cluster log

so, before we remove the test, we need to whitelist this warning

Signed-off-by: Kefu Chai <kchai@redhat.com>

qa/suites/rados/singleton-bluestore/all/cephtool.yaml

@@ -37,6 +37,7 @@ tasks:
     - \(POOL_NEARFULL\)
     - \(POOL_APP_NOT_ENABLED\)
     - \(AUTH_BAD_CAPS\)
+    - \(FS_INLINE_DATA_DEPRECATED\)
 - workunit:
     clients:
       all: