Add updated table styles

  - Refer below link for styles:
      https://ibm.invisionapp.com/share/D8O06PPE32B#/screens

Signed-off-by: Sukanya Pandey <sukapan1@in.ibm.com>
Change-Id: I6dcc3b8d0fb7ef19388b5bfeaf87fce78725b638
diff --git a/src/views/AccessControl/Ldap/TableRoleGroups.vue b/src/views/AccessControl/Ldap/TableRoleGroups.vue
index 8df8774..9daf1fd 100644
--- a/src/views/AccessControl/Ldap/TableRoleGroups.vue
+++ b/src/views/AccessControl/Ldap/TableRoleGroups.vue
@@ -34,6 +34,7 @@
           selectable
           show-empty
           no-select-on-click
+          hover
           no-sort-reset
           sort-icon-left
           :items="tableItems"