Remove mod_log_forensic from apache::default_mods (#2573)

mod_log_forensic should not be included by default, as the module has
security implications and might leak sensitive information from headers
incl. passwords.

Upstream documentation also warns about this:
https://httpd.apache.org/docs/2.4/mod/mod_log_forensic.html#security

Author: stdietrich

manifests/default_mods.pp

@@ -120,7 +120,6 @@
     include apache::mod::negotiation
     include apache::mod::setenvif
     include apache::mod::auth_basic
-    include apache::mod::log_forensic
 
     # filter is needed by mod_deflate
     include apache::mod::filter