Let limitreqfieldsize and limitreqfields be integers

We have run with `limitreqfieldsize` and `limitreqfields` be integers these values as
integers for a long time.

Checking

* https://httpd.apache.org/docs/2.4/mod/core.html#limitrequestfieldsize
* https://httpd.apache.org/docs/2.4/mod/core.html#limitrequestfields

these are indeed integers.

Author: traylenator

manifests/init.pp

@@ -520,8 +520,8 @@
   String $keepalive                                                     = $apache::params::keepalive,
   Variant[Integer,String] $keepalive_timeout                            = $apache::params::keepalive_timeout,
   Variant[Integer,String] $max_keepalive_requests                       = $apache::params::max_keepalive_requests,
-  String $limitreqfieldsize                                             = '8190',
-  String $limitreqfields                                                = '100',
+  Variant[Integer,String] $limitreqfieldsize                            = '8190',
+  Variant[Integer,String] $limitreqfields                               = '100',
   String $logroot                                                       = $apache::params::logroot,
   Optional[String] $logroot_mode                                        = $apache::params::logroot_mode,
   Apache::LogLevel $log_level                                           = $apache::params::log_level,