Introduce an authz_core mod class

This removes duplication in default mods and makes it easy to use
without default mods.

Author: ekohl

manifests/default_mods.pp

@@ -131,6 +131,7 @@
     }
     include apache::mod::alias
     include apache::mod::authn_file
+    include apache::mod::authz_core
     include apache::mod::autoindex
     include apache::mod::dav
     include apache::mod::dav_fs
@@ -142,11 +143,6 @@
     include apache::mod::auth_basic
 
     if versioncmp($apache_version, '2.4') >= 0 {
-      # authz_core is needed for 'Require' directive
-      ::apache::mod { 'authz_core':
-        id => 'authz_core_module',
-      }
-
       # lots of stuff seems to break without access_compat
       ::apache::mod { 'access_compat': }
     } else {
@@ -159,18 +155,8 @@
   } elsif $mods {
     ::apache::default_mods::load { $mods: }
 
-    if versioncmp($apache_version, '2.4') >= 0 {
-      # authz_core is needed for 'Require' directive
-      ::apache::mod { 'authz_core':
-        id => 'authz_core_module',
-      }
-    }
+    include apache::mod::authz_core
   } else {
-    if versioncmp($apache_version, '2.4') >= 0 {
-      # authz_core is needed for 'Require' directive
-      ::apache::mod { 'authz_core':
-        id => 'authz_core_module',
-      }
-    }
+    include apache::mod::authz_core
   }
 }

manifests/mod/authz_core.pp

@@ -0,0 +1,15 @@
+# @summary
+#   Installs `mod_authz_core`.
+# 
+# @param apache_version
+#   The version of apache being run.
+# 
+# @see https://httpd.apache.org/docs/current/mod/mod_authz_core.html for additional documentation.
+#
+class apache::mod::authz_core (
+  Optional[String] $apache_version = $apache::apache_version
+) {
+  if versioncmp($apache_version, '2.4') >= 0 {
+    apache::mod { 'authz_core': }
+  }
+}