Add toast component interactions

Include boostrap toast component to communicate success
and error requests on the local user management page.

- Created BVToastMixin to share initialization options
- Used async/await pattern to make sure toasts are shown
  after asynchronous calls are complete
- Followed current AngularJS pattern of manual dismiss for
  error toast and automatic dismiss for success toast

Signed-off-by: Yoshie Muranaka <yoshiemuranaka@gmail.com>
Change-Id: I5d5c037b5f41781972106fb5e9a2096cc72c39ab
diff --git a/src/components/Mixins/BVToastMixin.js b/src/components/Mixins/BVToastMixin.js
new file mode 100644
index 0000000..489173c
--- /dev/null
+++ b/src/components/Mixins/BVToastMixin.js
@@ -0,0 +1,24 @@
+const BVToastMixin = {
+  methods: {
+    successToast(message) {
+      this.$root.$bvToast.toast(message, {
+        title: 'Success',
+        variant: 'success',
+        autoHideDelay: 10000, //auto hide in milliseconds
+        isStatus: true,
+        solid: true
+      });
+    },
+    errorToast(message) {
+      this.$root.$bvToast.toast(message, {
+        title: 'Error',
+        variant: 'danger',
+        noAutoHide: true,
+        isStatus: true,
+        solid: true
+      });
+    }
+  }
+};
+
+export default BVToastMixin;