message: dashboard: Make StatusCard height flexible
  For the case when there is not enough status messages to show,
  the large white card looks distracting.
  By making it smaller, the focus is attracted to other cards instead.
diff: .co-status-card__alerts-body {
  border-top: 1px solid $pf-color-black-300;
  - height: 300px;
  + max-height: 19rem;
  + min-height: 6rem;
  overflow-x: hidden;
  overflow-y: auto;
  }
  