message: Display rate interval for the service page
diff: @@ -308,6 +308,10 @@ class ServiceListComponent extends React.Component<ServiceListComponentProps, Se
  if (this.state.loading) {
  serviceListComponent = <div className="spinner spinner-sm left-spinner" />;
  } else {
  + let rateIntervalSelected = MetricsOptionsBar.RateIntervals.find(el => {
  + return el[0] === this.state.rateInterval;
  + });
  +
  serviceListComponent = (
  <div>
  <NamespaceFilter
  @@ -328,8 +332,9 @@ class ServiceListComponent extends React.Component<ServiceListComponentProps, Se
  />
  </Sort>
  <div className="form-group">
  + <label>Rate Interval:&nbsp;</label>
  <DropdownButton
  - title="Rate Interval"
  + title={'Last ' + rateIntervalSelected![1]}
  onSelect={this.rateIntervalChangedHandler}
  id="rateIntervalDropDown"
  >
  