Finding AES ciphertext stealing test vectors?
Depends on what exactly you need.

Some test vectors can be found in the document "RFC 3962 - AES Encryption for Kerberos 5". If you take a look at page 11, you'll find some test vectors for CBC with ciphertext stealing, using an initial vector of all-zero.

Also, there are test vectors to be found at more exotic places like mozilla.org test vectors for AES CTS. They took the original test vectors for AES CTS-3 (Kerberos) and modified them for AES CTS-1 (NIST).

I'm sure that you favorite search engine will help you pinpoint the rest.