If server negotiates ADH or AECDH suite, openssl returns "ok" in
cert checking. Don't mark server as trusted because of that.
Don't collect statistics on servers that provide only untrusted
connections.
scan all the machines from top-1m.csv file, wait for completion
of all jobs
i=1 is an off-by-one-error
support top-1m.csv files with arbitrary number of sites
run scans for many hosts at a time, but don't run more than
specified amount
in case where default domain name doesn't resolve or doesn't have
port 443 open, retry with www. prefix
