explicitly ignore some fixture modules

Will be adding some demonstration modules
extract make_some_certs to a demo module (will go away)
drop concat as a testing fixture

so many places to stop tracking a thing
rename ssl_server parameters to match option names
split the end-to-end test into site_mcollective and site_nagios

This is a more complete example of the variour things you'll need to do
add mcollective::middleware for consistent structure
don't look into ${::settings::ssldir}

Copy from the named ca and server certs into /etc/mcollective and then work
from there.
update spec_helper_system for refactor