Allow OpenSearch with ElasticPress (#475)

* Include ElasticPress patch

* Delete unused post-type

public/app/themes/clarity/functions.php

@@ -65,6 +65,7 @@
 
 
 require_once 'inc/autoloader.php';
+require_once 'inc/elasticsearch-on-opensearch.php';
 require_once 'inc/cookies.php';
 require_once 'inc/comments.php';
 require_once 'inc/constants.php';
@@ -91,7 +92,6 @@
 require_once 'inc/post-types/post.php';
 require_once 'inc/post-types/event.php';
 require_once 'inc/post-types/news.php';
-// require_once 'inc/post-types/condolences.php';
 require_once 'inc/post-types/regional-news.php';
 require_once 'inc/post-types/regional-page.php';
 require_once 'inc/post-types/team-area.php';

public/app/themes/clarity/inc/elasticsearch-on-opensearch.php

@@ -0,0 +1,17 @@
+<?php
+
+/**
+ * We use ElasticPress to assist our search service
+ * Moving our search to AWS OpenSearch caused the plugin to stop working
+ * This hook fools ElasticPress into working.
+ *
+ * Further information:
+ * https://elasticpress.zendesk.com/hc/en-us/articles/16677288265741-Compatibility
+ */
+
+add_filter(
+    'ep_elasticsearch_version',
+    function() {
+        return '7.10';
+    }
+);