Add drop_unauthorized parameter to proxy hosts

drop_unauthorized returns 444 when a client is not authorized as opposed
to 403. It can be used with Client Certificate authorization.

backend/migrations/20230529030411_add_drop_unauthorized_to_proxyhosts.js

@@ -0,0 +1,39 @@
+const migrate_name = 'drop_unauthorized';
+const logger       = require('../logger').migrate;
+
+/**
+ * Migrate
+ *
+ * @see http://knexjs.org/#Schema
+ *
+ * @param {Object} knex
+ * @param {Promise} Promise
+ * @returns {Promise}
+ */
+exports.up = function (knex/*, Promise*/) {
+
+	logger.info('[' + migrate_name + '] Migrating Up...');
+
+	return knex.schema.table('proxy_host', function(proxy_host) {
+		proxy_host.integer('drop_unauthorized').notNull().unsigned().defaultTo(0);
+	}).then(() =>{
+		logger.info('[' + migrate_name + '] Migrating Up Complete');
+	});
+};
+
+/**
+ * Undo Migrate
+ *
+ * @param {Object} knex
+ * @param {Promise} Promise
+ * @returns {Promise}
+ */
+exports.down = function (knex/*, Promise*/) {
+	logger.info('[' + migrate_name + '] Migrating Down...');
+
+	return knex.schema.table('proxy_host', function(proxy_host) {
+		proxy_host.dropColumn('drop_unauthorized');
+	}).then(() =>{
+		logger.info('[' + migrate_name + '] Migrating Up Complete');
+	});
+};