Add debian/apertis/copyright

Signed-off-by: Dylan Aïssi <dylan.aissi@collabora.com>

debian/apertis/copyright

+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+
+Files: *
+Copyright: 2016, 2017, 2020, Collabora Ltd.
+License: MPL-2.0
+
+Files: build-aux/*
+Copyright: 2007-2016, Free Software Foundation, Inc.
+License: GPL-3+
+
+Files: debian/*
+Copyright: no-info-found
+License: MPL-2.0
+
+Files: debian/rhosydd-mock-backends.postinst
+ debian/rhosydd.postinst
+Copyright: 2016, 2017, 2020, Collabora Ltd.
+License: MPL-2.0
+
+Files: debian/tests/*
+Copyright: 2016, 2017, 2020, Collabora Ltd.
+License: MPL-2.0
+
+Files: debian/tests/control
+Copyright: no-info-found
+License: MPL-2.0
+
+Files: backends/mock/vehicle_attributes_spec.yaml git.mk
+Copyright:
+ © 2016 Collabora Ltd.
+License: MPL-2.0

debian/apertis/copyright.whitelist

+# GPL-3+ build script that do not affect the licensing of the artifacts
+build-aux/**