Unable to update password for overcloud-full image

Issue

Unable to update password for overcloud-full image https://access.redhat.com/articles/1556833
Trying to update the image root password using the command:

$ virt-customize --selinux-relabel -a overcloud-full.qcow2 --root-password password:Password123
[   0.0] Examining the guest ...
virt-customize: error: libguestfs error: guestfs_launch failed.
This usually means the libguestfs appliance failed to start or crashed.
Do:
  export LIBGUESTFS_DEBUG=1 LIBGUESTFS_TRACE=1
and run the command again.  For further information, read:
  http://libguestfs.org/guestfs-faq.1.html#debugging-libguestfs

You can also run 'libguestfs-test-tool' and post the complete output
into a bug report or message to the libguestfs mailing list.

If reporting bugs, run virt-customize with debugging enabled and include
the complete output:

  virt-customize -v -x [...]