Merge pull request #2908 from h-kataria/use_backend_method_to_show_di…

…sabled_catalog_item_types_in_drop_down

UI changes to show options as disabled if those are not supported.
(cherry picked from commit 19ecd2e)

https://bugzilla.redhat.com/show_bug.cgi?id=1520613

app/views/catalog/_st_form.html.haml

@@ -8,9 +8,14 @@
       .form-group
         %label.col-md-2.control-label= _('Catalog Item Type')
         .col-md-8
-          - array = Array(ServiceTemplate::CATALOG_ITEM_TYPES.invert).sort_by { |a| a.first.downcase }
+          - catalog_item_types = ServiceTemplate.catalog_item_types
+          - array = catalog_item_types.collect { |x| [x[1][:description], x[0]]}
+          - array.sort_by! { |a| a.first.downcase }
+          - disabled_options = catalog_item_types.collect { |x| x[0] if !x[1][:display]}
           = select_tag('st_prov_type',
-                       options_for_select(([["<#{_('Choose')}>",nil]]) + array, nil),
+                       options_for_select(([["<#{_('Choose')}>",nil]]) + array,
+                       :selected => '',
+                       :disabled => disabled_options),
                        "data-miq_sparkle_on" => true,
                        :class    => "selectpicker")
           :javascript