How to test:

$ virt-builder fedora-23 \
    --install "@Xfce Desktop" --update --root-password password:123456 --selinux-relabel

$ guestfish --ro -a fedora-23.img -i

Using guestfish check that /.autorelabel is *not* created.

$ virt-install --import --name test --ram 2048 --disk path=fedora-23.img,format=raw --os-variant fedora23

When it boots for the first time, ensure that services start up
correctly (not lots of "FAIL" lines or other errors during boot), and
ensure it does *not* reboot automatically because of autorelabel.

Inside the guest:

* You can log in as root (password: 123456).
* SELinux should be enforcing.

X11 should probably work too, but I cannot get it to start.  I think I'm
missing some packages, and it's not a SELinux error.

Verified with packages:
libguestfs-1.32.7-1.el7.x86_64


Verify steps:
1. Create a new guest image: fedora-22.img
# virt-builder fedora-22  --install "@Xfce Desktop" --update --root-password password:123456 --selinux-relabel
2. 
# guestfish --ro -a fedora-22.img -i
><fs> ls /
Check that /.autorelabel is *not* created
3. Start the guest image:
# virt-install --import --name test --ram 2048 --disk path=fedora22.img,format=raw --os-variant fedora22
# virsh list --all
 Id    Name                           State
----------------------------------------------------
 12    test                           running
# virsh console 12
4. Log into the guest use root , password is 123456
# cat /var/log/boot.log
Check the /var/log/boot.log that services start up correctly (not lots of "FAIL" lines or other errors during boot), and ensure it does *not* reboot automatically because of autorelabel.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2016-2576.html