Added toast notification for identify LEDs

- Added success toast notification messages for identify
  LEDs present at Inventory and LEDs page and Overview.

- Import of Toast was not present in Overview's Inventory
  card and DIMM slot table, fixed it.

Signed-off-by: Nikhil Ashoka <a.nikhil@ibm.com>
Change-Id: If9ad84e66f6f15616cb8af51b1e84d8d06b1afd0
diff --git a/src/views/Overview/OverviewInventory.vue b/src/views/Overview/OverviewInventory.vue
index 575cb7b..1da5685 100644
--- a/src/views/Overview/OverviewInventory.vue
+++ b/src/views/Overview/OverviewInventory.vue
@@ -29,12 +29,14 @@
 
 <script>
 import OverviewCard from './OverviewCard';
+import BVToastMixin from '@/components/Mixins/BVToastMixin';
 
 export default {
   name: 'Inventory',
   components: {
     OverviewCard,
   },
+  mixins: [BVToastMixin],
   computed: {
     systems() {
       let systemData = this.$store.getters['system/systems'][0];
@@ -50,6 +52,7 @@
     toggleIdentifyLedSwitch(state) {
       this.$store
         .dispatch('system/changeIdentifyLedState', state)
+        .then((message) => this.successToast(message))
         .catch(({ message }) => this.errorToast(message));
     },
   },