Enhanced User Management page error message

Description 1:
When WebUI creates the user with an already existing username
the error message will display the exact failure reason.

Tested:
Step 1: Login to webUI and navigate to user management page
Step 2: Create new user with username "testUser1"
Step 3: Create another user with same username "testUser1"
Step 4: WEB UI will through the error message
as "Username 'testuser1' already exists."

Description 2:
User can able to disable and change the root user via WebUI
Now restricted to disable the root user and changing the
root user privilege.

Tested:
Step 1: Login to Web UI with root user
Step 2: Navigate to User management page
Step 3: Try to modify the root user's details
Step 4: WebUI won't allow to disable the user,
username change and privilege change
Step 5: Login Web UI with non-root user
Step 6: Web UI won't allow to modify or delete the root
user's details

Change-Id: I0e38215b51fb058984664ec38ae9613e18043ed7
Signed-off-by: Sivaprabu Ganesan <sivaprabug@ami.com>
diff --git a/src/views/SecurityAndAccess/UserManagement/UserManagement.vue b/src/views/SecurityAndAccess/UserManagement/UserManagement.vue
index c6c556c..b17be86 100644
--- a/src/views/SecurityAndAccess/UserManagement/UserManagement.vue
+++ b/src/views/SecurityAndAccess/UserManagement/UserManagement.vue
@@ -217,12 +217,17 @@
           actions: [
             {
               value: 'edit',
-              enabled: true,
+              enabled: this.editEnable(user),
               title: this.$t('pageUserManagement.editUser'),
             },
             {
               value: 'delete',
-              enabled: user.UserName === 'root' ? false : true,
+              enabled:
+                user.UserName === this.$store.getters['global/username']
+                  ? false
+                  : true && user.UserName === 'root'
+                  ? false
+                  : true,
               title: this.$tc('pageUserManagement.deleteUser'),
             },
           ],
@@ -247,6 +252,13 @@
     this.$store.dispatch('userManagement/getAccountRoles');
   },
   methods: {
+    editEnable(user) {
+      if ('root' === this.$store.getters['global/username']) {
+        return true;
+      } else {
+        return user.UserName === 'root' ? false : true;
+      }
+    },
     initModalUser(user) {
       this.activeUser = user;
       this.$bvModal.show('modal-user');