title: exposing disk usage metrics spring boot application
body: <p>i want to expose the disk usage for my micro-service to Prometheus, i'm already using micrometer and micrometer Prometheus with jdk 11 and spring boot actuator</p>
  <p>im able to get all the other metrics working like tomcat_sessions and jvm_buffer_total_capacity_bytes etc,
  and i can't seem to find a way of exposing the disk usage</p>