Added unique identifier for dropdowns

Author: krishagarwal278

web/src/components/dropdown-poll-interval.tsx

@@ -5,6 +5,7 @@ import {
   parsePrometheusDuration,
 } from './console/console-shared/src/datetime/prometheus';
 import { SimpleSelect, SimpleSelectOption } from '@patternfly/react-templates';
+import { LegacyDashboardPageTestIDs } from './data-test';
 
 type DropDownPollIntervalProps = {
   setInterval: (v: number) => void;
@@ -48,6 +49,7 @@ export const DropDownPollInterval: React.FunctionComponent<DropDownPollIntervalP
       initialOptions={initialOptions}
       onSelect={(_ev, selection) => onSelect(_ev, selection)}
       toggleWidth="150px"
+      data-test={LegacyDashboardPageTestIDs.PollIntervalDropdownOptions}
     />
   );
 };