tests/t-kdf: Test KDF FIPS indicator
- tests/t-kdf.c (check_fips_indicators): Add test for gcry_control (GCRYCTL_FIPS_SERVICE_INDICATOR_KDF).
Add a tests that checks that gcry_control(GCRYCTL_FIPS_SERVICE_INDICATOR_KDF)
works correctly, does not return unexpected values, and returns that
only PBKDF2 is approved at the moment.
- Signed-off-by: Clemens Lang <cllang@redhat.com>