Convert per_page in foreman::foreman to string

CGI.escape can only deal with strings and the function accepts per_page
as an integer.

Author: ekohl

lib/puppet/functions/foreman/foreman.rb

@@ -62,7 +62,7 @@ def foreman(item, search, per_page = "20", foreman_url = "https://localhost", fo
     raise Puppet::ParseError, "Foreman: Invalid filter_result: #{filter_result}, must not be boolean true" if filter_result == true
 
     begin
-      path = "/api/#{CGI.escape(item)}?search=#{CGI.escape(search)}&per_page=#{CGI.escape(per_page)}"
+      path = "/api/#{CGI.escape(item)}?search=#{CGI.escape(search)}&per_page=#{CGI.escape(per_page.to_s)}"
 
       req = Net::HTTP::Get.new(path)
       req['Content-Type'] = 'application/json'