Revert "Remove restriction that only 'promoted to homepage' content is shown to page and in RSS"

This reverts commit b3cb66d029.

config/sync/views.view.frontpage.yml

@@ -74,6 +74,44 @@ display:
           sort_asc_label: Asc
           sort_desc_label: Desc
       filters:
+        promote:
+          admin_label: ''
+          expose:
+            description: ''
+            identifier: ''
+            label: ''
+            multiple: false
+            operator: ''
+            operator_id: ''
+            remember: false
+            remember_roles:
+              authenticated: authenticated
+            required: false
+            use_operator: false
+          exposed: false
+          field: promote
+          group: 1
+          group_info:
+            default_group: All
+            default_group_multiple: {  }
+            description: ''
+            group_items: {  }
+            identifier: ''
+            label: ''
+            multiple: false
+            optional: true
+            remember: false
+            widget: select
+          group_type: group
+          id: promote
+          is_grouped: false
+          operator: '='
+          relationship: none
+          table: node_field_data
+          value: '1'
+          plugin_id: boolean
+          entity_type: node
+          entity_field: promote
         status:
           expose:
             operator: ''