Draft: .oniro-ci: publish rauc bundles for pi4 to hawkbit

This patch-set fixes several issues and inefficiencies related to bundle build process and starts publishing Raspberry Pi 4 builds to HawkBit.

.oniro-ci/build-generic.yaml

@@ -293,7 +293,7 @@
         (
           cd "$BITBAKE_TMPDIR"/deploy/
           for artifact in $CI_ONIRO_JOB_ARTIFACTS; do
-            find ./ -type f -name "$artifact" -exec cp --parents {} "$CI_PROJECT_DIR"/artifacts \;
+            find ./ -type f -name "$artifact" -exec cp --verbose --archive --parents {} "$CI_PROJECT_DIR"/artifacts \;
           done
         )
       fi