I have implemented EFK stack using helm chart and after few days I installed metric beat in kuberentes cluster, right now we are getting metric and it is visible in kibana UI. However, we noticed only one metricbeat index being created and it's size is more than 30GB. We wanted to enable dynamic index for metricbeat. Could you help us how to define dynamic index for metric-beat. We are using fluent-bti as agent on worker nodes. Do we have to add another OUTPUT section for metricbeat?