v5.2.0

• [Security] wordpress/wordpress-ha*.yaml - updated WordPress to 4.8.2
• [Bug Fix] security/cloudtrail.yaml, security/config.yaml - ExternalBucket parameter should be optional #121
• [Improvement] jenkins/jenkins2-ha*.yaml - added label masterto master
• [Improvement] jenkins/jenkins2-ha-agents.yaml - disable builds on the master

Docs: http://templates.cloudonaut.io/en/v5.2.0/