ruby: Updated MOESI_hammer L2 latency behavior

ruby: Updated MOESI_hammer L2 latency behavior

Previously, the MOESI_hammer protocol calculated the same latency for L1 and
L2 hits.  This was because the protocol was written using the old ruby
assumption that L1 hits used the sequencer fast path.  Since ruby no longer
uses the fast-path, the protocol delays L2 hits by placing them on the
trigger queue.