[Test Runner] Adds wait_for_completion=false in wipe_cluster

Build is timing out on deleting jobs and datafeeds

Author: picandocodigo

elasticsearch-api/api-spec-testing/wipe_cluster.rb

@@ -414,14 +414,14 @@ def clear_privileges(client)
         def clear_ml_jobs(client)
           client.ml.close_job(job_id: '_all', force: true)
           client.ml.get_jobs['jobs'].each do |d|
-            client.ml.delete_job(job_id: d['job_id'])
+            client.ml.delete_job(job_id: d['job_id'], wait_for_completion: false, force: true)
           end
         end
 
         def clear_datafeeds(client)
           client.ml.stop_datafeed(datafeed_id: '_all', force: true)
           client.ml.get_datafeeds['datafeeds'].each do |d|
-            client.ml.delete_datafeed(datafeed_id: d['datafeed_id'])
+            client.ml.delete_datafeed(datafeed_id: d['datafeed_id'], force: true, wait_for_completion: false)
           end
         end