[oslo.middleware] Add support for basic auth middleware options

This change introduces support for options of basic auth middleware[1],
which was implemented during the Xena cycle.

[1] da7987ca926e9bd82ff2989a920ea9740da24f95

Change-Id: I6dc1b1bd1f49ffa6e49e5e08e2462974c89309f5

manifests/middleware.pp

@@ -17,13 +17,23 @@
 #   (boolean value)
 #   Defaults to $::os_service_default.
 #
+# [*http_basic_auth_user_file*]
+#   (Optional) HTTP basic auth password file.
+#   (string value)
+#   Defaults to $::os_service_default.
+#
 define oslo::middleware(
+  # sizelimit
   $max_request_body_size        = $::os_service_default,
+  # http_proxy_to_wsgi
   $enable_proxy_headers_parsing = $::os_service_default,
+  # basic_auth
+  $http_basic_auth_user_file    = $::os_service_default,
 ) {
   $middleware_options = {
     'oslo_middleware/max_request_body_size'        => { value => $max_request_body_size },
     'oslo_middleware/enable_proxy_headers_parsing' => { value => $enable_proxy_headers_parsing },
+    'oslo_middleware/http_basic_auth_user_file'    => { value => $http_basic_auth_user_file },
   }
   create_resources($name, $middleware_options)
 }

releasenotes/notes/basic-auth-middleware-64bf02c8f2a710f6.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The new ``oslo::middleware::http_basic_auth_userfile`` parameter has been
+    added.

spec/defines/oslo_middleware_spec.rb

@@ -10,6 +10,7 @@ describe 'oslo::middleware' do
       it 'configure oslo_middleware default params' do
        is_expected.to contain_keystone_config('oslo_middleware/max_request_body_size').with_value('<SERVICE DEFAULT>')
        is_expected.to contain_keystone_config('oslo_middleware/enable_proxy_headers_parsing').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_keystone_config('oslo_middleware/http_basic_auth_user_file').with_value('<SERVICE DEFAULT>')
       end
 
     end
@@ -19,11 +20,13 @@ describe 'oslo::middleware' do
           {
             :max_request_body_size        => 114600,
             :enable_proxy_headers_parsing => true,
+            :http_basic_auth_user_file    => '/etc/htpasswd',
           }
       end
       it 'configure oslo_middleware with overridden values' do
         is_expected.to contain_keystone_config('oslo_middleware/max_request_body_size').with_value(114600)
         is_expected.to contain_keystone_config('oslo_middleware/enable_proxy_headers_parsing').with_value(true)
+        is_expected.to contain_keystone_config('oslo_middleware/http_basic_auth_user_file').with_value('/etc/htpasswd')
       end
 
     end