Please review the attached patch for the following bug:

• Bugzilla Bug #979559 - Parameter --ca_domain_url should be optional

This bug addresses the problem of attempting to configure an instance using a version of pki-silent which contains the new code with expanded parameters while using an old template from a previous version of pki-silent which did not contain these parameters.

Tested by installing and successfully configuring a CA using the newly patched code with an old template which excluded the "-ca_domain_url" parameter.