[BUILD] Changelog for release 13.3.22

Also includes minor corrections of changelog for release 13.3.15

Change-Id: I85a34200476e764baf13e70495b518a79000bb79
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/669


Tested-by: Jenkins CI
Reviewed-by: Michael Scheppat <mschepp@zedat.fu-berlin.de>
Reviewed-by: Franz Zieris <zieris@inf.fu-berlin.de>