OpenSSL generate_host_certificate(): Use config.privoxy.org as Common Name
... Org and Org Unit if the real host name is too long to
get accepted by OpenSSL.
Prevents failures like:
2021-03-15 10:04:34.318
802816f00 Error: X509 subject name (code: CN, val: only-d-pmjr9f4mclevwwl2mwckreicm8k1afzk-
1615774207025.nstool.netease.com) error: error:
0D07A097:asn1 encoding routines:ASN1_mbstring_ncopy:string too
Clients should only care about the Subject Alternative Name
anyway and we can continue to use the real host name for it.
Reported by Miles Wen on privoxy-users@.