message: Monitoring: Fix key attribute for Silence matchers
  It is possible for two matchers to have the same name, so we can't use
  this as the key. Alertmanager actually allows two matchers to have both
  the same name and the same value, so even a combination of both would
  not be sufficient.
diff: @@ -163,7 +163,7 @@ const Label = ({k, v}) => <div className="co-m-label co-m-label--expand" key={k}
  </div>;
  const SilenceMatchersList = ({silence}) => <div className={`co-text-${SilenceResource.kind.toLowerCase()}`}>
  - {_.map(silence.matchers, ({name, isRegex, value}) => <Label key={name} k={name} v={isRegex ? `~${value}` : value} />)}
  + {_.map(silence.matchers, ({name, isRegex, value}, i) => <Label key={i} k={name} v={isRegex ? `~${value}` : value} />)}
  </div>;
  const alertStateToProps = (state): AlertsDetailsPageProps => {
  