qa/suites: wait longer before stopping OSDs with valgrind

If we don’t wait long enough before stopping OSDs that run under valgrind,
some cleanup steps (like umount) might fail or be skipped.

Fixes: https://tracker.ceph.com/issues/62713
Signed-off-by: Nitzan Mordechai <[email protected]>

Author: NitzanMordhai

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

@@ -32,5 +32,6 @@ overrides:
       mon: [--tool=memcheck, --leak-check=full, --show-reachable=yes]
       osd: [--tool=memcheck]
       mds: [--tool=memcheck]
+    stop-daemons-timeout: 1200
 # https://tracker.ceph.com/issues/38621
 #      mgr: [--tool=memcheck]