message: Update build metrics chart title
  The CPU metrics displayed are not CPU shares. Change to "CPU Usage."
diff: @@ -93,7 +93,7 @@ const BuildGraphs = requirePrometheus(({build}) => {
  <Line title="RAM" query={`pod_name:container_memory_usage_bytes:sum{pod_name='${podName}',container_name='',namespace='${build.metadata.namespace}'}`} />
  </div>
  <div className="col-md-4">
  - <Line title="CPU Shares" query={`pod_name:container_cpu_usage:sum{pod_name='${podName}',container_name='',namespace='${build.metadata.namespace}'} * 1000`} />
  + <Line title="CPU Usage" query={`pod_name:container_cpu_usage:sum{pod_name='${podName}',container_name='',namespace='${build.metadata.namespace}'} * 1000`} />
  </div>
  <div className="col-md-4">
  <Line title="Filesystem (bytes)" query={`pod_name:container_fs_usage_bytes:sum{pod_name='${podName}',container_name='',namespace='${build.metadata.namespace}'}`} />
  