keysigner to output 'issuer' configuration at startup

lib/configuration.js

@@ -140,6 +140,7 @@ if (g_config === undefined) throw "unknown environment: " + exports.get('env');
 {
   var ourURL = process.env['BROWSERID_URL'] || g_config['URL'];
   var purl = urlparse(ourURL).validate().normalize().originOnly();
+
   g_config.URL = purl.toString();
   g_config.hostname = purl.host;
   g_config.scheme = purl.scheme;

lib/keysigner/ca.js

@@ -45,7 +45,9 @@ var jwcert = require('jwcrypto/jwcert'),
     secrets = require('../secrets.js'),
     logger = require('../logging.js').logger;
 
-var HOSTNAME = config.get('hostname');
+const HOSTNAME = config.get('hostname');
+logger.info("Certs will be issued from: " + HOSTNAME);
+
 
 try {
   const secret_key = secrets.loadSecretKey('root', config.get('var_path'));