Windows Keystore has certreq.inf as second configuration file

[Javex]

The Windows Keystore uses the certreq.inf as a second configuration file. This may lead to the issue that it is necessary to change to files in order to configure CertNanny with the Windows Keystore. The better approach here is to make CertNanny take parameters from the configuration file and write them into a temporary certreq.inf.

Examples of how to achieve that can be seen in CertNanny::Util->writeOpenSSLConfig(). If the certreq.inf should be removed, then there is a documented sample at https://github.com/Javex/various-sources/blob/master/Tools/Certreq/certreq.inf

[mbartosch]

Eventually move this to CertNanny.