New tool: virt-similarity

I wrote a small tool to make cladograms from virtual machine disk images. You can find it here.

Suggested future work:

1. Make the output machine-readable.
2. Improve the diagram.
3. Display the “distance” measure.
4. Don’t connect guests which have very large distances.
5. Give guidance about how to create backing files.
6. Get it into Fedora.
7. Integrate into OpenStack, oVirt.
8. Alternate distance measures.