Description of problem:
The path option -p or --path is ignored when create sandbox container.

Version-Release number of selected component (if applicable):
libvirt-sandbox-0.1.0-1.fc18.x86_64
httpd-2.4.3-15.fc18.x86_64
kernel-3.8.2-206.fc18.x86_64

How reproducible:
always

Steps to Reproduce:
1. make a dir
# ll /home/wayne/test/ -dZ
drwxr-xr-x. root root unconfined_u:object_r:user_home_t:s0 /home/wayne/test/

2. create a sandbox container with -p
# virt-sandbox-service create -p /home/wayne/test/ -t svirt_lxc_net_t -l s0:c200,c300 -C -u httpd.service apache13
Created sandbox container dir /var/lib/libvirt/filesystems/apache13
Created sandbox config /etc/libvirt-sandbox/services/apache13.sandbox
Created unit file /etc/systemd/system/httpd

# ll -Zd /home/wayne/test/
drwxr-xr-x. root root unconfined_u:object_r:user_home_t:s0 /home/wayne/test/

container dir remains at the default dir, the given dir is empty.

3.
  
Actual results:
-p is ignored

Expected results:
given path should work with create sandbox container

Additional info: