Merge pull request 'Using sql connections in round robbin mode instead of the same (possibly)' (#361) from sql into master

Reviewed-on: SteamWar/BungeeCore#361
Reviewed-by: Lixfel <lixfel@steamwar.de>

src/de/steamwar/bungeecore/sql/Statement.java

@@ -115,7 +115,7 @@ public class Statement implements AutoCloseable {
         }
 
         synchronized (connections) {
-            connections.push(connection);
+            connections.addLast(connection);
         }
 
         return result;