dont fail if mpm_module is itk, apache_version >= 2.4  and class apache::mod::prefork is not defined
dont fail if mpm_module is itk, apache_version >= 2.4  and class apache::mod::prefork is not defined

include apache::mod::prefork in apache::mod::itk instead
because cant include apache::mod::prefork before class apache
"Warning: Scope(Class[Apache::Mod::Prefork]): Could not look up qualified variable '::apache::apache_version'; class ::apache has not been evaluated"
"Error: Could not find dependency Exec[mkdir ] for File[/prefork.conf] at apache/manifests/mod/prefork.pp:44"

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