Commit da75fe5a

 "apparmor: Drop bluez/, now shipped by tests/apparmor-bluez"
broke the debian package build by removing the `apparmor/bluez` folder but not
dropping the debian package which used to ship its contents:

    dh_install --fail-missing
    dh_install: Please use dh_missing --list-missing/--fail-missing instead
    dh_install: This feature will be removed in compat 12.
    dh_install: Cannot find (any matches for) "apparmor/bluez/*.expected" (tried in ., debian/tmp)

    dh_install: apertis-tests-apparmor-bluez missing files: apparmor/bluez/*.expected
    dh_install: Cannot find (any matches for) "apparmor/bluez/*.sh" (tried in ., debian/tmp)

    dh_install: apertis-tests-apparmor-bluez missing files: apparmor/bluez/*.sh
    dh_install: Cannot find (any matches for) "apparmor/bluez/test-bluez" (tried in ., debian/tmp)

    dh_install: apertis-tests-apparmor-bluez missing files: apparmor/bluez/test-bluez
    dh_install: missing files, aborting
    make[1]: *** [debian/rules:13: override_dh_install] Error 25

Signed-off-by: Emanuele Aina <emanuele.aina@collabora.com>