/etc/selinux/default/contexts/virtual_image_context is in selinux-policy-default 2:2.20161023.1-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | system_u:object_r:svirt_image_t:s0
system_u:object_r:virt_content_t:s0
|