sdk-import-debian-package: add the new mandatory --reason flag

With apertis-dev-tools 0.2023.4, a new mandatory flag was added
for sdk-import-debian-package. This new flag allows to pass the reason
for importing the package. See commit 1588bc10 in `pkg/apertis-dev-tools`

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

test-cases/sdk-import-debian-package.yaml

@@ -26,4 +26,4 @@ run:
     - "# Enter test directory:"
     - cd sdk-import-debian-package-test
     - "# Test import-debian-package:"
-    - lava-test-case sdk-import-debian-package --shell import-debian-package --upstream buster --downstreams apertis/v2020:apertis/v2021 --component target --package dash --version 0.5.10.2-5
+    - lava-test-case sdk-import-debian-package --shell import-debian-package --upstream buster --downstreams apertis/v2020:apertis/v2021 --component target --package dash --version 0.5.10.2-5 --reason "Testing"