[libvirt] Add USER support to virt-sandbox-service

[dwalsh at redhat.com]

This patch set is adding support for UID/GID/USERNAME/USERDIR for use with openshift
containers

[sandbox PATCH 1/6] Add UID/GID support for use with interactive
[sandbox PATCH 2/6] We should not turn on the sanbox shell by
[sandbox PATCH 3/6] Only create the destination directory if it does
[sandbox PATCH 4/6] Add support for --homedir and --username setting
[sandbox PATCH 5/6] Add support for --uid, --gid, --username,
[sandbox PATCH 6/6] Update man page to document current