update 3.8 changelog
update 3.8 changelog

Change-Id: I5e992bcb72d7bc76f1e5346a130ffd8b31ef33d3

dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild