Include PanelIdsInserter stage into sequence

In order to utilise added PanelIdsInserter stage its class needs to be
included into SEQUENCE constant in dashboard processing services.

app/services/metrics/dashboard/base_service.rb

@@ -11,6 +11,7 @@ module Metrics
       SEQUENCE = [
         STAGES::CommonMetricsInserter,
         STAGES::EndpointInserter,
+        STAGES::PanelIdsInserter,
         STAGES::Sorter
       ].freeze
 

app/services/metrics/dashboard/gitlab_alert_embed_service.rb

@@ -10,7 +10,10 @@ module Metrics
     class GitlabAlertEmbedService < ::Metrics::Dashboard::BaseEmbedService
       include Gitlab::Utils::StrongMemoize
 
-      SEQUENCE = [STAGES::EndpointInserter].freeze
+      SEQUENCE = [
+        STAGES::EndpointInserter,
+        STAGES::PanelIdsInserter
+      ].freeze
 
       class << self
         # Determines whether the provided params are sufficient

app/services/metrics/dashboard/grafana_metric_embed_service.rb

@@ -10,7 +10,8 @@ module Metrics
       include ReactiveCaching
 
       SEQUENCE = [
-        ::Gitlab::Metrics::Dashboard::Stages::GrafanaFormatter
+        ::Gitlab::Metrics::Dashboard::Stages::GrafanaFormatter,
+        ::Gitlab::Metrics::Dashboard::Stages::PanelIdsInserter
       ].freeze
 
       self.reactive_cache_key = ->(service) { service.cache_key }

app/services/metrics/dashboard/predefined_dashboard_service.rb

@@ -11,6 +11,7 @@ module Metrics
 
       SEQUENCE = [
         STAGES::EndpointInserter,
+        STAGES::PanelIdsInserter,
         STAGES::Sorter
       ].freeze
 

app/services/metrics/dashboard/self_monitoring_dashboard_service.rb

@@ -11,6 +11,7 @@ module Metrics
       SEQUENCE = [
         STAGES::CustomMetricsInserter,
         STAGES::EndpointInserter,
+        STAGES::PanelIdsInserter,
         STAGES::Sorter
       ].freeze
 

app/services/metrics/dashboard/system_dashboard_service.rb

@@ -13,6 +13,7 @@ module Metrics
         STAGES::CustomMetricsInserter,
         STAGES::CustomMetricsDetailsInserter,
         STAGES::EndpointInserter,
+        STAGES::PanelIdsInserter,
         STAGES::Sorter
       ].freeze
 

ee/app/services/metrics/dashboard/cluster_dashboard_service.rb

@@ -10,6 +10,7 @@ module Metrics
 
       SEQUENCE = [
         STAGES::ClusterEndpointInserter,
+        STAGES::PanelIdsInserter,
         STAGES::Sorter
       ].freeze
 

ee/app/services/metrics/dashboard/cluster_metrics_embed_service.rb

@@ -28,7 +28,8 @@ module Metrics
 
       def sequence
         [
-          STAGES::ClusterEndpointInserter
+          STAGES::ClusterEndpointInserter,
+          STAGES::PanelIdsInserter
         ]
       end
     end

spec/fixtures/lib/gitlab/metrics/dashboard/schemas/panels.json

@@ -7,6 +7,7 @@
   ],
   "properties": {
     "title": { "type": "string" },
+    "id": { "type": "string" },
     "type": { "type": "string" },
     "y_label": { "type": "string" },
     "y_axis": { "$ref": "axis.json" },