[packaging] Archive .ddeb files
[packaging] Archive .ddeb files

Bionic package builds might create a .ddeb package with debug
information. Since this is referenced in the .changes file it is
required for uploading to the repo. This change adds archiving of
.ddeb files.

Change-Id: I9c276b56337d41b3ed6ea9ae365c4f3469886444

sillsdev/ci-builder-scripts,sillsdev/ci-builder-scripts,sillsdev/ci-builder-scripts