/sslcert paramter: Use CN (common name) instead of hash

[Michael__Wolf]

At the moment using https on the resourcePC the parameter /sslcert needs the hash value. From my perspective it will be better to use the common name (CN) of the certificate, because the CN won't change if the certificate is renewed, but the hash value will. Therefore there is some maintenance work to do to use the new hash value, which can be prevented by using CN