[Packaging] Fix unnecessary building of i386
[Packaging] Fix unnecessary building of i386

Don't build amd64 for architecture 'all' if only i386 is selected.

Change-Id: I075a1997b2f74b46969bfa6601f528d5471df399

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