Crypto libraries are starting to refuse to accept the old shorter keys,
so move all test certificates and DH to use 2048 bit (or longer) keys.
Signed-off-by: Jouni Malinen <j@w1.fi>
Verify OCSP stapling response that is signed by the CA rather than a
separate OCSP responder. In addition, verify that invalid signer
certificate (missing OCSP delegation) gets rejected.
Signed-off-by: Jouni Malinen <j@w1.fi>