UBUNTU: SAUCE: Audit: Add a new record for multiple object LSM

UBUNTU: SAUCE: Audit: Add a new record for multiple object LSM
 attributes

Create a new audit record type to contain the object information
when there are multiple security modules that require such data.
This record is emitted before the other records for the event, but
is linked with the same timestamp and serial number.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Cc: linux-audit@redhat.com
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>