Fixed the ability to disable the index_files

manifests/resource/vhost.pp

@@ -237,7 +237,7 @@ define nginx::resource::vhost (
       fastcgi_script      => $fastcgi_script,
       try_files           => $try_files,
       www_root            => $www_root,
-      index_files         => undef,
+      index_files         => [],
       location_custom_cfg => $location_custom_cfg,
       notify              => Class['nginx::service'],
     }

templates/vhost/vhost_header.erb

@@ -34,7 +34,7 @@ server {
        return 301 https://$host$request_uri;
   }
 <% end -%>
-<% if @index_files -%>
+<% if @index_files.count > 0 -%>
     index <% Array(index_files).each do |i| %> <%= i %><% end %>;
 <% end -%>
 

templates/vhost/vhost_location_directory.erb

@@ -17,7 +17,7 @@
 <% if @autoindex == 'on' -%>
     autoindex on;
 <% end -%>
-<% if @index_files -%>
+<% if @index_files.count > 0 -%>
     index <% Array(index_files).each do |i| %> <%= i %><% end %>;
 <% end -%>
 <% if defined? @auth_basic -%>

templates/vhost/vhost_ssl_header.erb

@@ -20,7 +20,7 @@ server {
 <% if defined? @auth_basic_user_file -%>
   auth_basic_user_file      "<%= @auth_basic_user_file %>";
 <% end -%>
-<% if @index_files -%>
+<% if @index_files.count > 0 -%>
     index <% Array(index_files).each do |i| %> <%= i %><% end %>;
 <% end -%>