PLT-7976: Configurable timeout for Elasticsearch requests. (#7716)

i18n/en.json

@@ -3887,6 +3887,10 @@
     "id": "model.config.is_valid.elastic_search.bulk_indexing_time_window_seconds.app_error",
     "translation": "Elasticsearch Bulk Indexing Time Window must be at least 1 second."
   },
+  {
+    "id": "model.config.is_valid.elastic_search.request_timeout_seconds.app_error",
+    "translation": "Elasticsearch Request Timeout must be at least 1 second."
+  },
   {
     "id": "ent.emoji.licence_disable.app_error",
     "translation": "Custom emoji restrictions disabled by current license. Please contact your system administrator about upgrading your enterprise license."