apps.c: re-enable loading single certs and CRLs over HTTP
apps.c: re-enable loading single certs and CRLs over HTTP

Fixes #13403

Reviewed-by: Matt Caswell <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13404)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl