Add OCSP_RESPID_set_by_key_ex() and OCSP_RESPID_match_ex()

Add OCSP_RESPID_set_by_key_ex() and OCSP_RESPID_match_ex()

OCSP_RESPID_set_by_key() calculates a SHA1 hash of the supplied
certificate. We need to be able to specify which libctx and property
query string is used to fetch that algorithm so we introduce
OCSP_RESPID_set_by_key_ex() which does the same thing but enables you to
speicfy the library context and propery query string explicitly.

OCSP_RESPID_match() matches with certificates based on the SHA1 hash.
Therefore for the same reason we introduce OCSP_RESPID_match_ex().

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/11407)