[Discover] Add kql-telemetry and search-telementry SO schemas (#154261)

## Summary

A follow up for #153131
This PR adds schemas for kql-telemetry and search-telemetry SO types.

src/core/server/integration_tests/saved_objects/migrations/group2/check_registered_types.test.ts

@@ -108,7 +108,7 @@ describe('checking migration metadata changes on all registered SO types', () =>
         "ingest-package-policies": "6dc1c9b80a8dc95fbc9c6d9b73dfc56a098eb440",
         "ingest_manager_settings": "fb75bff08a8de3435b23664b1191f9244a255701",
         "inventory-view": "6d47ef0b38166ecbd1c2fc7394599a4500db1ae4",
-        "kql-telemetry": "23ed96ff02cd69cbfaa22f313cae3a54c434db51",
+        "kql-telemetry": "92d6357aa3ce28727492f86a54783f802dc38893",
         "legacy-url-alias": "9b8cca3fbb2da46fd12823d3cd38fdf1c9f24bc8",
         "lens": "2f6a8231591e3d62a83506b19e165774d74588ea",
         "lens-ui-telemetry": "d6c4e330d170eefc6214dbf77a53de913fa3eebc",
@@ -127,7 +127,7 @@ describe('checking migration metadata changes on all registered SO types', () =>
         "sample-data-telemetry": "c38daf1a49ed24f2a4fb091e6e1e833fccf19935",
         "search": "01bc42d635e9ea0588741c4c7a2bbd3feb3ac5dc",
         "search-session": "58a44d14ec991739166b2ec28d718001ab0f4b28",
-        "search-telemetry": "ab67ef721f294f28d5e10febbd20653347720188",
+        "search-telemetry": "1bbaf2db531b97fa04399440fa52d46e86d54dd8",
         "security-rule": "1ff82dfb2298c3caf6888fc3ef15c6bf7a628877",
         "security-solution-signals-migration": "c2db409c1857d330beb3d6fd188fa186f920302c",
         "siem-detection-engine-rule-actions": "123c130dc38120a470d8db9fed9a4cebd2046445",

src/plugins/data/server/saved_objects/kql_telemetry.ts

@@ -7,19 +7,17 @@
  */
 
 import { SavedObjectsType } from '@kbn/core/server';
+import { SCHEMA_KQL_TELEMETRY_V8_8_0 } from './schemas/kql_telemetry';
 
 export const kqlTelemetry: SavedObjectsType = {
   name: 'kql-telemetry',
   namespaceType: 'agnostic',
   hidden: false,
   mappings: {
-    properties: {
-      optInCount: {
-        type: 'long',
-      },
-      optOutCount: {
-        type: 'long',
-      },
-    },
+    dynamic: false,
+    properties: {},
+  },
+  schemas: {
+    '8.8.0': SCHEMA_KQL_TELEMETRY_V8_8_0,
   },
 };

src/plugins/data/server/saved_objects/schemas/kql_telemetry.ts

@@ -0,0 +1,14 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import { schema } from '@kbn/config-schema';
+
+export const SCHEMA_KQL_TELEMETRY_V8_8_0 = schema.object({
+  optInCount: schema.maybe(schema.number()),
+  optOutCount: schema.maybe(schema.number()),
+});

src/plugins/data/server/saved_objects/schemas/search_telemetry.ts

@@ -0,0 +1,16 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import { schema } from '@kbn/config-schema';
+
+// As per `CollectedUsage`
+export const SCHEMA_SEARCH_TELEMETRY_V8_8_0 = schema.object({
+  successCount: schema.maybe(schema.number()),
+  errorCount: schema.maybe(schema.number()),
+  totalDuration: schema.maybe(schema.number()),
+});

src/plugins/data/server/saved_objects/search_telemetry.ts

@@ -8,6 +8,7 @@
 
 import { SavedObjectsType } from '@kbn/core/server';
 import { migrate712 } from './migrations/to_v7_12_0';
+import { SCHEMA_SEARCH_TELEMETRY_V8_8_0 } from './schemas/search_telemetry';
 
 export const searchTelemetry: SavedObjectsType = {
   name: 'search-telemetry',
@@ -20,4 +21,7 @@ export const searchTelemetry: SavedObjectsType = {
   migrations: {
     '7.12.0': migrate712,
   },
+  schemas: {
+    '8.8.0': SCHEMA_SEARCH_TELEMETRY_V8_8_0,
+  },
 };