qa: ensure appropriate level of clout clean QA 1485 state

Seeing some errors like the following in CI from this test,
which is called by 1487 (valgrind variant).

> rm: cannot remove '/var/tmp/1487-1642747/root/dev/disk/by-uuid/671db429-689a-4dfa-81a8-050c3b651334': Permission denied

qa/1485

@@ -103,13 +103,13 @@ _doit
 
 echo
 echo "/dev/disk/by-uuid empty ..."
-rm -f $LINUX_STATSPATH/dev/disk/by-uuid/*
+$sudo rm -f $LINUX_STATSPATH/dev/disk/by-uuid/*
 DEBUG='-Dappl8'
 _doit
 
 echo
 echo "/dev/disk/by-uuid missing ..."
-rm -rf $LINUX_STATSPATH/dev/disk/by-uuid
+$sudo rm -rf $LINUX_STATSPATH/dev/disk/by-uuid
 DEBUG='-Dappl8'
 _doit