Search engine features (GoogleCloudPlatform#15173)

Signed-off-by: Cezary Sobczak <Cezary.Sobczak@infogain.com>
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Author: 28 people

mmv1/products/discoveryengine/SearchEngine.yaml

@@ -158,3 +158,7 @@ properties:
       This is the application type this engine resource represents.
       The supported values: 'APP_TYPE_UNSPECIFIED', 'APP_TYPE_INTRANET'.
     immutable: true
+  - name: 'features'
+    type: KeyValuePairs
+    description: |
+      A map of the feature config for the engine to opt in or opt out of features.

mmv1/third_party/terraform/services/discoveryengine/resource_discovery_engine_search_engine_test.go

@@ -115,6 +115,9 @@ resource "google_discovery_engine_search_engine" "basic" {
     search_tier = "SEARCH_TIER_STANDARD"
     search_add_ons = ["SEARCH_ADD_ON_LLM"]
   }
+  features = {
+    feedback = "FEATURE_STATE_OFF"
+  }
 }
 `, context)
 }