Add kernel module xt_statistic

[LoeFe]

When a k3s-agent is installed to the recent image and a hazelcast pod is deployed to the iot-2050-node, ip-tables can not be modified by k3s-agent since XT_STATISTIC Kernel module is missing. This behavior has only been observed jet in the described setup and can be avoided by deleting and recreating the hazelcast pod.