Fixed host Enrolled column.

The Enrolled column in the host search page has been added back
to show the host enrollment status based on has_keytab attribute.

Ticket #2020

install/ui/host.js

@@ -31,7 +31,11 @@ IPA.entity_factories.host = function () {
         search_facet({
             columns: [
                 'fqdn',
-                'description'
+                'description',
+                {
+                    name: 'has_keytab',
+                    label: IPA.messages.objects.host.enrolled
+                }
             ]
         }).
         details_facet({