Add loading bar to Overview page

Signed-off-by: Yoshie Muranaka <yoshiemuranaka@gmail.com>
Change-Id: I47ef77dda6b348c854e875aa458acfa44e287c49
diff --git a/src/store/modules/GlobalStore.js b/src/store/modules/GlobalStore.js
index c9e92a7..879d8d8 100644
--- a/src/store/modules/GlobalStore.js
+++ b/src/store/modules/GlobalStore.js
@@ -40,8 +40,8 @@
       (state.hostStatus = hostStateMapper(hostState))
   },
   actions: {
-    getBmcTime({ commit }) {
-      api
+    async getBmcTime({ commit }) {
+      return await api
         .get('/redfish/v1/Managers/bmc')
         .then(response => {
           const bmcDateTime = response.data.DateTime;