Add host field to Post an event V2 API (#33285)

Co-authored-by: ci.datadog-api-spec <[email protected]>

Author: api-clients-generation-pipeline[bot]

content/en/api/v2/events/examples.json

@@ -43,6 +43,7 @@
       },
       "category": "change",
       "integration_id": "custom-events",
+      "host": "test-host",
       "message": "payment_processed feature flag has been enabled",
       "tags": [
         "env:api_client_test"

content/en/api/v2/events/request.CreateEvent.json

@@ -20084,6 +20084,13 @@ components:
           $ref: '#/components/schemas/EventPayloadAttributes'
         category:
           $ref: '#/components/schemas/EventCategory'
+        host:
+          description: Host name to associate with the event. Any tags associated
+            with the host are also applied to this event. Limited to 255 characters.
+          example: hostname
+          maxLength: 255
+          minLength: 1
+          type: string
         integration_id:
           $ref: '#/components/schemas/EventPayloadIntegrationId'
         message:
@@ -68146,6 +68153,7 @@ paths:
                           rule:
                             datacenter: devcycle.us1.prod
                       category: change
+                      host: hostname
                       integration_id: custom-events
                       message: payment_processed feature flag has been enabled
                       tags: