Add Heap dumps for analysis

Signed-off-by: Lixfel <agga-games@gmx.de>

src/de/steamwar/bungeecore/SubserverSystem.java

@@ -100,6 +100,8 @@ public class SubserverSystem {
             cmd.add("-DcheckSchemID=" + checkSchemID);
         cmd.add("-Xmx3G");
         cmd.addAll(JVM_ARGS);
+        cmd.add("-XX:+HeapDumpOnOutOfMemoryError");
+        cmd.add("-XX:HeapDumpPath=/home/minecraft/heap_dumps");
         cmd.add("-jar");
         cmd.add(BINARY_PATH + modus.serverJar());
         cmd.add("--log-strip-color");