fix(core/pipeline): Refresh jenkins jobs component when manual execut…

…ion trigger is changed (spinnaker#7323)

In Manual Execution dialog, we have a dropdown that selects the correct trigger
When the user changes the selected trigger, we now force the trigger's custom component to remount.
This is a kludge and some day we should remove it.
Instead, all the trigger type components should properly respond to changes in the props passed to it.

app/scripts/modules/core/src/pipeline/manualExecution/Triggers.tsx

@@ -89,7 +89,12 @@ export class Triggers extends React.Component<ITriggersProps> {
 
         {triggerComponent && (
           <div className={'trigger-template'}>
-            <TriggerTemplate updateCommand={this.updateCommand} component={triggerComponent} command={formik.values} />
+            <TriggerTemplate
+              key={formik.values.trigger.description}
+              updateCommand={this.updateCommand}
+              component={triggerComponent}
+              command={formik.values}
+            />
           </div>
         )}
       </div>