Allow setting a custom path for mime.types

In certain environment the user may wish to use mime.types file from
a path other than $conf_dir

manifests/config.pp

@@ -82,6 +82,7 @@
   $keepalive_requests             = $nginx::keepalive_requests
   $log_format                     = $nginx::log_format
   $mail                           = $nginx::mail
+  $mime_types_path                = $nginx::mime_types_path
   $stream                         = $nginx::stream
   $mime_types                     = $nginx::mime_types_preserve_defaults ? {
     true    => merge($nginx::params::mime_types,$nginx::mime_types),

manifests/init.pp

@@ -96,6 +96,7 @@
   $keepalive_requests                                        = '100',
   $log_format                                                = {},
   Boolean $mail                                              = false,
+  Variant[String, Boolean] $mime_types_path                  = 'mime.types',
   Boolean $stream                                            = false,
   String $multi_accept                                       = 'off',
   Integer $names_hash_bucket_size                            = 64,

spec/classes/nginx_spec.rb

@@ -974,11 +974,17 @@
           context 'when conf_dir is /path/to/nginx' do
             let(:params) { { conf_dir: '/path/to/nginx' } }
 
-            it { is_expected.to contain_file('/path/to/nginx/nginx.conf').with_content(%r{include       /path/to/nginx/mime\.types;}) }
+            it { is_expected.to contain_file('/path/to/nginx/nginx.conf').with_content(%r{include       mime\.types;}) }
             it { is_expected.to contain_file('/path/to/nginx/nginx.conf').with_content(%r{include /path/to/nginx/conf\.d/\*\.conf;}) }
             it { is_expected.to contain_file('/path/to/nginx/nginx.conf').with_content(%r{include /path/to/nginx/sites-enabled/\*;}) }
           end
 
+          context 'when mime_types_path is /path/to/mime.types' do
+            let(:params) { { mime_types_path: '/path/to/mime.types' } }
+
+            it { is_expected.to contain_file('/etc/nginx/nginx.conf').with_content(%r{include       /path/to/mime\.types;}) }
+          end
+
           context 'when confd_purge true' do
             let(:params) { { confd_purge: true } }
 

templates/conf.d/nginx.conf.erb

@@ -59,7 +59,9 @@ http {
   <%- end -%>
   <%- end -%>
 <% end -%>
-  include       <%= @conf_dir %>/mime.types;
+<% if @mime_types_path.is_a? String && @mime_types_path.empty? == false -%>
+  include       <%= @mime_types_path %>;
+<% end -%>
   default_type  application/octet-stream;
 <% if @log_format -%>
 <% @log_format.sort_by{|k,v| k}.each do |key,value| -%>