Remove whole tmpdir and outputdir

The default osbuild_store is in tmpdir, files inevitably obtain root permissions in here as osbuild requires sudo permissions for loopback mounts. When the python script exits, it tries to recursively remove this tmpdir and it spews loads of error messages as it cannot remove the root owned files. This fixes this issue. It is ok to remove this directory at the end of a build as it is a randomly generated directory anyway, intended to be recursively deleted at the end of the build.

Signed-off-by: Eric Curtin ecurtin@redhat.com