Fix hostname for elasticsearch_servers default in config

metacpan_server.yaml

@@ -4,7 +4,7 @@ git: /usr/bin/git
 cpan: /CPAN
 secret: "the stone roses"
 level: info
-elasticsearch_servers: http://localhost:9200
+elasticsearch_servers: http://elasticsearch:9200
 minion_dsn: "postgresql://metacpan:t00lchain@pghost:5432/minion_queue"
 port: 5000