Always move built rpms, even under partial failure

When a build command fails (due to a package causing
problems) we potentially have already built a set of
other packages (especially when building is done in
parallel), so even when failure occurs we need to move
the rpms that have been build to the target repository.

Fixes bug 1355442

Change-Id: I9f346e189db964bfd9679d452ba9637192a6697c
Merge "Always move built rpms, even under partial failure"