Add firmware mauv to the dbus state

Adding an interface in Dbus for redfishz to query this values for
telemetry. This uses the hothd data pipeline and store to put the
firmware mauv into the dbus state.

TEST= https://paste.googleplex.com/5565207670292480

Change-Id: I5a68b42c833c8b8619dfecb73535cf1e2d0c57c8
Signed-off-by: Ellis Sarza-Nguyen <sarzanguyen@google.com>
9 files changed