functions: Use --force to allow for package overwrites

If we change the packages, we want to be able to overwrite the package if we've
changed it, without changing the package revision. This is actually counter to
Debian apt repository policy, but is needed for the unstable repo, and aptly
will overwrite the packages as it goes.

Change-Id: I9a7b676cb0fa8109d5d77c63f49b8fa03091dbd7
1 file changed