qa/suites/rados/verify/validater: ignore OSD_DOWN

In these tests, we are intentionally stopping and restoring OSDs,
so it makes sense to ignore these warnings.

Fixes: https://tracker.ceph.com/issues/67181
Signed-off-by: Laura Flores <[email protected]>

Author: Laura Flores

qa/suites/rados/verify/validater/valgrind.yaml

@@ -27,6 +27,7 @@ overrides:
       - \(SLOW_OPS\)
       - slow request
       - OSD bench result
+      - OSD_DOWN
     valgrind:
       mon: [--tool=memcheck, --leak-check=full, --show-reachable=yes]
       osd: [--tool=memcheck]