Fix loading hang

Import and add loading property to pages that are disabling
forms based on LoadingBarMixin loading property.

Signed-off-by: Yoshie Muranaka <yoshiemuranaka@gmail.com>
Change-Id: I1669bff2572422327566a3afe023633eb0b729f4
diff --git a/src/views/Configuration/NetworkSettings/NetworkSettings.vue b/src/views/Configuration/NetworkSettings/NetworkSettings.vue
index 3260dff..4cf0f83 100644
--- a/src/views/Configuration/NetworkSettings/NetworkSettings.vue
+++ b/src/views/Configuration/NetworkSettings/NetworkSettings.vue
@@ -299,7 +299,7 @@
 import IconTrashcan from '@carbon/icons-vue/es/trash-can/20';
 import IconAdd from '@carbon/icons-vue/es/add--alt/20';
 import BVToastMixin from '@/components/Mixins/BVToastMixin';
-import LoadingBarMixin from '@/components/Mixins/LoadingBarMixin';
+import LoadingBarMixin, { loading } from '@/components/Mixins/LoadingBarMixin';
 import PageSection from '@/components/Global/PageSection';
 import PageTitle from '@/components/Global/PageTitle';
 import TableRowAction from '@/components/Global/TableRowAction';
@@ -365,6 +365,7 @@
         ipv4StaticTableItems: [],
         dnsStaticTableItems: [],
       },
+      loading,
     };
   },
   validations() {