SSL certificate / SSL configuration - FIPS-197 compliance
FIPS 197 is the AES specification. An implementation complies with it if, and only if, it correctly implements the AES algorithm. The standard applies only to implementations of AES; it doesn't apply to certificates, or TLS server configurations, or computer systems in general. In particular, since it only applies to implementations of AES, it doesn't actually require that you use AES at any point in your system. Other FIPS apply to broader things (e.g. FIPS 140-2 applies to cryptographic modules) and do specify acceptable algorithms to use, but the algorithm specification itself just tells you how the algorithm works.

Unlike FIPS 140-2, FIPS 197 compliance isn't a big deal. It just means whoever coded the AES implementation did it correctly; it doesn't even mean they did so securely.