[libvirt] Second pass at patch to get different SELinux Labels for virt-sandbox

selinux-policy-3.12.1-87.fc21 selinux-policy-3.12.1-87.fc20 Now have lxc_contexts files that look like lxc=system_u:system_r:svirt_lxc_net_t:s0 qemu=system_u:system_r:svirt_qemu_net_t:s0 kvm=system_u:system_r:svirt_qemu_net_t:s0 process=system_u:system_r:svirt_lxc_net_t:s0 file=system_u:object_r:svirt_sandbox_file_t:s0 content=system_u:object_r:virt_var_lib_t:s0 [sandbox PATCH] virt-sandbox patch to launch containers with proper