remove unnecessary dependencies in order to break this cyclic dependency:

Error: Could not apply complete catalog: Found 1 dependency cycle:
(A2mod[passenger] => Class[Apache::Mod::Passenger] => Class[Puppet::Master] => Exec[Certificate_Check] => Class[Apache::Mod::Passenger] => A2mod[passenger])
Try the '--graph' option and opening the resulting '.dot' file in OmniGraffle or GraphViz