Some configuration changes are needed due to the move to the async http client Original commit: elastic/x-pack-elasticsearch@2f28dec0a0
This changes the xpack.monitoring.agent.* settings so that they fall under xpack.monitoring.collection.*. - This also changes Kibana's equivalent data_collection to collection. Original commit: elastic/x-pack-elasticsearch@a69bc18055
This commit removes as much of the use of shield as possible in the source code. See elastic/elasticsearch#2383 Original commit: elastic/x-pack-elasticsearch@00009cc06e