add configuration sanity checks in cli application

bin/update-metadata.in

@@ -33,6 +33,12 @@ if (!$configuration) {
     die Config::Tiny->errstr() . "\n";
 }
 
+die "no database defined in configuration, aborting\n"
+    if !$configuration->{database};
+
+die "no federation defined in configuration, aborting\n"
+    if !$configuration->{federations};
+
 AccountManager::DB->register_db(
     driver   => $configuration->{database}->{type},
     database => $configuration->{database}->{name},