torture: Run one test with DEBUG_LOCK_ALLOC but not PROVE_LOCKING

This commit sets CONFIG_DEBUG_LOCK_ALLOC but not CONFIG_PROVE_LOCKING
for TREE08 in order to have at least one test with this configuration.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>